Subtitles section
Repeat sentence
Subtitles mode
Full screen
Previous
Next
x 1.0
Playback speed
More

How do Geckos Stick to Walls? | What is Electronegativity? | Superpower of Geckos | Dr Binocs Show

Video vocabulary

same

Copy vocabulary

US / seɪm /

UK / sem /

A1
  • adjecitve
  • Being equal in quality and amount
  • Identical; not different
  • Not changing; constant

spatula

Copy vocabulary

US / ˈspætʃələ /

UK / ˈspætʃələ /

C1
  • noun
  • Hand tool used to mix or spread soft substances
  • other
  • A turner with a narrow flexible blade

lump

Copy vocabulary

US / lʌmp /

UK / lʌmp /

B1
  • noun
  • Small swollen mass in body, e.g. showing disease
  • A small hard part of something smooth
  • verb
  • To combine things together in a group

periodic

Copy vocabulary

US / ˌpɪəriˈɒdɪk /

UK / ˌpɪriˈɑ:dɪk /

A2
  • adjecitve
  • Happening regularly, but not frequently

miniature

Copy vocabulary

US / ˈmɪnətʃə(r) /

UK / ˈmɪniəˌtʃʊr, -tʃɚ, ˈmɪnə- /

B2
  • adjecitve
  • Made to be much smaller than normal
  • noun
  • Small model of something larger
  • Very small painting, picture or portrait

become

Copy vocabulary

US / bɪ'kʌm /

UK / bɪˈkʌm /

A1
  • verb
  • To begin to be; grow to be; develop into
  • To be suitable for a particular job or role

creature

Copy vocabulary

US / ˈkri:tʃə(r) /

UK / ˈkritʃɚ /

A2
  • noun
  • Animal of any type

attach

Copy vocabulary

US / ə'tætʃ /

UK / əˈtætʃ /

A2
  • verb
  • To be associated or connected with

themselves

Copy vocabulary

US / ðəmˈselvz /

UK / ðɛmˈsɛlvz, ðəm- /

A1
  • pronoun
  • Reflexive form of 'they'

size

Copy vocabulary

US / saɪz /

UK / saɪz /

A1
  • noun
  • How big or small a thing is
  • Standard measurements for clothing, shoes
  • verb
  • To make something to fit a particular measurement
  • To organize or group from small to large

our

Copy vocabulary

US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

not

Copy vocabulary

US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

kitty

Copy vocabulary

US / /

UK / /

B2
  • noun
  • Amount of money a group of people share
  • Money contributed for expenses by group of people
  • Person's name

belong

Copy vocabulary

US / bɪ'lɒŋ /

UK / bɪˈlɔŋ /

A1
  • verb
  • To be a welcomed as a new member of a group
  • To own something
  • To be in the right place or situation

tape

Copy vocabulary

US / teɪp /

UK / tep /

A2
  • noun
  • Narrow strip of magnetic material for recording on
  • Thin material used to mark an area or seal things
  • verb
  • To record some sounds using an electric device
  • To stick things together using an adhesive strip

intermolecular

Copy vocabulary

US / ɪntə(:)mə'lekjʊlə /

UK / 'ɪntəmə'lekjələ /

A1
  • other
  • Existing or acting between molecules

fifty

Copy vocabulary

US / 'fɪftɪ /

UK / ˈfɪfti /

A1
  • number
  • 50

but

Copy vocabulary

US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

stickiness

Copy vocabulary

US / ˈstɪkinəs /

UK / ˈstɪkinəs /

B2
  • noun
  • Property of sticking to a surface

want

Copy vocabulary

US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

sum

Copy vocabulary

US / sʌm /

UK / sʌm /

A2
  • noun
  • Amount when all is added together; total
  • verb
  • To add two or more numbers together; total

thin

Copy vocabulary

US / θɪn /

UK / θɪn /

A1
  • adjecitve
  • Flowing with ease; with a high percentage of water
  • (Of air) having little oxygen
  • Being or growing far apart in small amounts
  • Not thick; not wide in size
  • Having little flesh or fat on the body
  • Being weak or useless
  • verb
  • To make flow more easily by adding water or liquid

understand

Copy vocabulary

US / ˌʌndə'stænd /

UK / ˌʌndɚˈstænd /

A1
  • verb
  • To know the meaning of language, what someone says

really

Copy vocabulary

US / ˈri:əli /

UK / ˈriəˌli, ˈrili /

A1
  • adverb
  • Used to stress something that is said; definitely
  • In a true or accurate manner
  • Very

interested

Copy vocabulary

US / ˈɪntrəstɪd /

UK / ˈɪntrɪstɪd, -tərɪstɪd, -təˌrɛstɪd /

A1
  • adjecitve
  • Having had your attention taken; curious
  • verb
  • To make someone want to know about something
  • To persuade to do, become involved with something

table

Copy vocabulary

US / ˈteɪbl /

UK / ˈtebəl /

A1
  • noun
  • Diagram that shows data in rows and columns
  • Raised flat surface you sit at to work or eat
  • verb
  • To leave an idea to be discussed at a later date

ion

Copy vocabulary

US / 'aɪən /

UK / ˈaɪən /

B2
  • noun
  • Atoms with either a positive or negative charge

angle

Copy vocabulary

US / ˈæŋgl /

UK / ˈæŋɡəl /

B1
  • noun
  • Place where two lines or surfaces meet

cloud

Copy vocabulary

US / klaʊd /

UK / klaʊd /

A1
  • noun
  • A mass of smoke or mist hanging in the air
  • verb
  • To confuse the mind/judgment of a person
  • (Of the sky) to get darker and fill with clouds
  • To make (glass, etc.) difficult to see through
  • To make an activity less pleasant or enjoyable
  • (Of person's face, etc.) to show worry/anger

towards

Copy vocabulary

US / tə'wɔ:dz /

UK / 'təuədz, twɔ:dz /

A1
  • preposition
  • In the direction of someone or something

nearly

Copy vocabulary

US / ˈniəli /

UK / ˈnɪrli /

A1
  • adverb
  • Not completely; almost

can

Copy vocabulary

US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

attraction

Copy vocabulary

US / ə'trækʃn /

UK / əˈtrækʃən /

A2
  • noun
  • Theme park or fairground; place worth visiting
  • The act of making someone become interested in

subtropical

Copy vocabulary

US / ˌsʌbˈtrɒpɪkl /

UK / ˌsʌbˈtrɑ:pɪkl /

B1
  • adjecitve
  • Of or characteristic of conditions in subtropics

positively

Copy vocabulary

US / ˈpɒzətɪvli /

UK / ˈpɑ:zətɪvli /

B1
  • adverb
  • In a manner showing agreement or support for
  • Definitely or certainly
  • In a good, beneficial way

mind

Copy vocabulary

US / maɪnd /

UK / maɪnd /

A1
  • noun
  • One's opinion or way of thinking about something
  • Part of humans that allows us to think or feel
  • verb
  • To be bothered or upset by something
  • To take care of someone e.g. as a bodyguard

next

Copy vocabulary

US / nekst /

UK / nɛkst /

A1
  • adverb
  • The one that follows another in time or order
  • At a time or place directly after the present one
  • noun
  • The one that follows after
  • adjecitve
  • Immediately after the previous one
  • First occurrence after the present one

without

Copy vocabulary

US / wɪˈðaʊt /

UK / wɪðˈaʊt, wɪθ- /

A1
  • preposition
  • Not with; not having

salt

Copy vocabulary

US / sɔ:lt /

UK / sɔlt /

A2
  • adjecitve
  • Being preserved or seasoned with salt
  • noun
  • Natural white crystal used to flavor food
  • verb
  • To add salt to food in order to improve its taste
  • To add salt to ice in order to melt it
  • To preserve food by adding salt

have

Copy vocabulary

US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

extra

Copy vocabulary

US / 'ekstrə /

UK / 'ekstrə /

A2
  • adjecitve
  • More than necessary; additional
  • noun
  • Items more than you need; additional items
  • Person who has a small part in a movie
  • Special version of a newspaper

cover

Copy vocabulary

US / 'kʌvə(r) /

UK / ˈkʌvɚ /

A1
  • noun
  • A different version of another song
  • Bed sheets; blankets
  • (Police or military) protection from attack
  • Amount of money to be paid in an insurance claim
  • Thing you put over something to close or hide it
  • Front and back part of a book or magazine
  • Shelter built to protect from the natural elements
  • verb
  • To record a different version of another song
  • To include as part of its area
  • To put something over something to hide it
  • To discuss a subject in a talk or meeting
  • To form a layer over something so it is hidden
  • To have sufficient funds to pay for something
  • To include something within an agreed limit
  • To report news on TV, radio or in a newspaper
  • (Police or military) to protect from attack
  • To travel a certain distance in a given time
  • To wrap something with something, such as a cloth

ponder

Copy vocabulary

US / ˈpɒndə(r) /

UK / ˈpɑ:ndə(r) /

B2
  • verb
  • To think about something with great care

engineer

Copy vocabulary

US / ˌendʒɪ'nɪə(r) /

UK / ˌɛndʒəˈnɪr /

A2
  • noun
  • Someone whose job is designing machines, buildings
  • Someone whose job is to repair or maintain engines

end

Copy vocabulary

US / end /

UK / ɛnd /

A1
  • noun
  • The point where a process or activity stops
  • A point that marks the limit of something; finish
  • Goal or desired result
  • The tip, edge or limit of something
  • verb
  • To be the last part of something

see

Copy vocabulary

US / si: /

UK / si /

A1
  • verb
  • To go on a date with someone
  • To predict whether something is, or will be true
  • To understand what someone says
  • To use your eyes to look at something
  • To visit a place often for sightseeing or pleasure
  • To visit or meet with someone
  • To find out by waiting or looking
  • To watch (a game, movie or TV show)

negative

Copy vocabulary

US / 'neɡətɪv /

UK / ˈnɛɡətɪv /

A2
  • adjecitve
  • Being harmful, unwanted or unhelpful
  • In mathematics, being less than zero
  • Focusing on the bad aspects; pessimistic
  • noun
  • The opposite to a positive electrical charge
  • In grammar, containing words such as 'no' or 'not'
  • Reply to a question or statement that means 'no'
  • Image on camera film used to make a photo

chill

Copy vocabulary

US / tʃɪl /

UK / tʃɪl /

B1
  • noun
  • State of being a little cold
  • Feeling of fear or being frightened
  • Slight cold or illness that makes you shake
  • verb
  • To make something cold, e.g. a drink
  • To become less tense about something

spider

Copy vocabulary

US / ˈspaɪdə(r) /

UK / ˈspaɪdɚ /

B1
  • noun
  • Small creature with 8 legs that spins cobwebs

world

Copy vocabulary

US / wɜ:ld /

UK / wɜrld /

A1
  • noun
  • All the humans, events, activities on the earth
  • Political division due to some kind of similarity

lizard

Copy vocabulary

US / ˈlɪzəd /

UK / ˈlɪzərd /

B2
  • noun
  • Reptile with scales and a long body and tail

hundred

Copy vocabulary

US / 'hʌndrəd /

UK / ˈhʌndrɪd /

A1
  • number
  • 100

era

Copy vocabulary

US / 'ɪərə /

UK / 'ɪrə /

B1
  • noun
  • Period characterized by particular events, people

casually

Copy vocabulary

US / 'kæʒʊəlɪ /

UK / ˈkæʒjʊəlɪ /

A2
  • adverb
  • In an unconcerned manner

with

Copy vocabulary

US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

upon

Copy vocabulary

US / əˈpɔn, əpən /

UK / əˈpɑn, əˈpɔn /

A1
  • preposition
  • More formal term for 'on'

percent

Copy vocabulary

US / pə'sent /

UK / pɚˈsɛnt /

A2
  • adverb
  • One one-hundredth of a whole; the symbol %

weak

Copy vocabulary

US / wi:k /

UK / wik /

A1
  • adjecitve
  • Not having a strong character
  • Less valuable compared to money of other countries
  • Ineffective; unconvincing; not strong
  • Having little power or ability
  • Not having the necessary or proper amount
  • Having little power; not strong; easy to break
  • (Of a drink) having lots of water and little taste

slightly

Copy vocabulary

US / ˈslaɪtli /

UK / ˈslaɪtli /

B1
  • adverb
  • Only a little

know

Copy vocabulary

US / nəʊ /

UK / noʊ /

A1
  • verb
  • To be familiar with a person or place, thing
  • To feel sure or be convinced about something
  • To discover or be aware of something
  • To be able to distinguish
  • To have knowledge of things

behind

Copy vocabulary

US / bɪˈhaɪnd /

UK / bɪˈhaɪnd /

A1
  • adjecitve
  • Concerning a later or slower time than expected
  • Being in a losing position in a sporting event
  • Being in the past; old fashioned
  • adverb
  • Remaining
  • noun
  • The part of the body that one sits on
  • preposition
  • At or toward the back of someone or something
  • Supporting or helping someone

foot

Copy vocabulary

US / fʊt /

UK / fʊt /

A1
  • noun
  • Base of something such as a mountain or vase
  • Length of 12 inches or about 25 cm
  • Lowest part of the leg we use to stand on

could

Copy vocabulary

US / kəd /

UK / kʊd /

A1
  • other
  • Past form of 'can' to mean have ability
  • Used to ask for something politely, or to offer

they

Copy vocabulary

US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

skilled

Copy vocabulary

US / skɪld /

UK / skɪld /

A2
  • adjecitve
  • Having or showing or requiring special skill

principle

Copy vocabulary

US / ˈprɪnsəpl /

UK / ˈprɪnsəpəl /

A2
  • noun
  • Moral rule or belief governing a person's behavior
  • Natural law that explains how things work

between

Copy vocabulary

US / bɪˈtwi:n /

UK / bɪˈtwin /

A1
  • preposition
  • From one person, thing, or place, to another
  • In the space that separates two objects
  • Among two or more people who share something

cozy

Copy vocabulary

US / 'kəʊzɪ /

UK / ˈkozi /

B1
  • adjecitve
  • Comfortable, warm, pleasant, and often, small

atom

Copy vocabulary

US / 'ætəm /

UK / ˈætəm /

B1
  • noun
  • Smallest bit that matter can be broken down into

glue

Copy vocabulary

US / ɡlu: /

UK / ɡlu /

B1
  • noun
  • Sticky substance used for joining things together
  • verb
  • To join or affix things with glue or paste

crawl

Copy vocabulary

US / krɔ:l /

UK / krɔl /

B1
  • noun
  • Very slow progress (e.g. traffic)
  • Swimming by moving your arms forward then back
  • verb
  • To move very slowly or cautiously
  • To move along with the body close to the ground
  • To walk like an insect

apparent

Copy vocabulary

US / ə'pærənt /

UK / əˈpærənt, əˈpɛr- /

A2
  • adjecitve
  • Easy to see or clearly understand
  • Seeming to exist or be true, but may not be

spot

Copy vocabulary

US / spɒt /

UK / spɑt /

A2
  • noun
  • A certain place or area
  • A difficult time; awkward situation
  • Place or ranking on a list
  • A small amount of (substance help hard work etc.)
  • Mark caused by a drop of liquid, food, etc.
  • verb
  • To see someone or something by chance

movie

Copy vocabulary

US / ˈmu:vi /

UK / ˈmuvi /

A1
  • noun
  • Motion picture; film

neighbour

Copy vocabulary

US / 'neɪbə(r) /

UK / ˈnebɚ /

B1
  • noun
  • Person who lives, or is near, you

bring

Copy vocabulary

US / brɪŋ /

UK / brɪŋ /

A1
  • verb
  • To take or go with someone to a place

add

Copy vocabulary

US / æd /

UK / æd /

A1
  • verb
  • To include as well
  • To put two things or numbers together, e.g. 2+2

thank

Copy vocabulary

US / θæŋk /

UK / θæŋk /

A1
  • verb
  • To tell someone you are grateful to them

rooftop

Copy vocabulary

US / ˈru:ftɒp /

UK / ˈru:ftɑ:p /

C2
  • noun
  • Top of a roof, e.g. of garden on a roof

pay

Copy vocabulary

US / peɪ /

UK / pe /

A1
  • noun
  • Money you receive from your job, work, etc.
  • verb
  • To give money for goods or work done
  • To give (attention, respect, etc.) to
  • To be punished or suffer for something you did
  • To make (a visit) to a person or place

chloride

Copy vocabulary

US / 'klɔ:raɪd /

UK / ˈklɔrˌaɪd, ˈklor- /

A1
  • noun
  • A mixture of chlorine and another chemical

way

Copy vocabulary

US / weɪ /

UK / we /

A1
  • adverb
  • Used to emphasize the amount of something
  • noun
  • Particular aspect of something being thought about
  • One of various choices that could be made
  • Particular existing condition or state
  • (Often long) distance or length of time
  • How something is done
  • Route to go to a place
  • Small street
  • Usual behavior, emotions or habits of someone

zoom

Copy vocabulary

US / zu:m /

UK / zum /

B1
  • noun
  • Camera lens used to magnify images
  • verb
  • To move along or go somewhere very quickly

yes

Copy vocabulary

US / jes /

UK / jɛs /

A1
  • adverb
  • Way to say you agree or will do something

their

Copy vocabulary

US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

else

Copy vocabulary

US / els /

UK / ɛls /

A1
  • adverb
  • Otherwise; if you fail to
  • (Of person place thing etc.) besides; in addition

ago

Copy vocabulary

US / əˈgəʊ /

UK / əˈgoʊ /

A1
  • adverb
  • At a specified length of time in the past

web

Copy vocabulary

US / web /

UK / wɛb /

A1
  • noun
  • Skin between ducks' toes that enables them to swim
  • Internet's collection of interrelated information
  • Net made from silk threads produced by spiders
  • Complicated set of relationships or connections

super

Copy vocabulary

US / ˈsu:pə(r) /

UK / ˈsupɚ /

A2
  • adjecitve
  • Of the highest quality; great; marvelous

fast

Copy vocabulary

US / fɑ:st /

UK / fæst /

A1
  • adjecitve
  • In a way that is difficult to move or change
  • Moving or able to move quickly
  • Showing time that is later than the actual time
  • adverb
  • With a great deal of speed
  • noun
  • Period of time when a person chooses not to eat
  • verb
  • To refuse food for a long time

all

Copy vocabulary

US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

setae

Copy vocabulary

US / 'si:ti: /

UK / 'si:ti: /

A1
  • noun
  • A stiff structure resembling a hair or a bristle, especially in an invertebrate.

hold

Copy vocabulary

US / həʊld /

UK / hold /

A1
  • noun
  • Section of a ship or plane used for storing things
  • Influence or power held over someone
  • Place of support for hands or feet when climbing
  • verb
  • To agree to keep something for someone
  • To have the capacity to support/contain something
  • To control an area and protect it from attack
  • To not allow someone to leave a place
  • To cause an event to happen at a place or time
  • To use hands or arms to carry or keep something
  • To have a specific quality or property
  • To keep an image, belief or feeling in your mind
  • To have or own something
  • To wait before being able to talk on the phone
  • To limit the movement of someone in a sport

akin

Copy vocabulary

US / əˈkɪn /

UK / əˈkɪn /

B2
  • adjecitve
  • Similar to; like; almost the same as

answer

Copy vocabulary

US / 'ɑ:nsə(r) /

UK / ˈænsɚ /

A1
  • noun
  • Reply to a question someone asks
  • Solution to a problem or test question
  • verb
  • To reply to a question someone asks
  • To solve a test question or a problem

this

Copy vocabulary

US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

consist

Copy vocabulary

US / kən'sɪst /

UK / kənˈsɪst /

A2
  • verb
  • To have as an essential, necessary or main part

epic

Copy vocabulary

US / 'epɪk /

UK / ˈɛpɪk /

B2
  • adjecitve
  • Going on for a long time; awe-inspiring
  • noun
  • A long story, often about many people and events

man

Copy vocabulary

US / mæn /

UK / mæn /

A1
  • noun
  • Humans in general, including male and female
  • An adult male human being
  • Male who acts in a masculine way; not like a woman
  • verb
  • To control or operate (a machine); be in charge of
  • To operate a machine (a boat, etc.)

opposite

Copy vocabulary

US / ˈɔpəzit /

UK / ˈɑpəzɪt /

A2
  • adjecitve
  • Being totally different from
  • noun
  • Person, thing that is totally different to another
  • preposition
  • Across from or on the side facing something

chemical

Copy vocabulary

US / ˈkemɪkl /

UK / ˈkɛmɪkəl /

A2
  • adjecitve
  • Made of various elements
  • noun
  • Basic substance produced by mixing elements

surface

Copy vocabulary

US / 'sɜ:fɪs /

UK / ˈsɚfəs /

A2
  • adjecitve
  • Of the top layer; not deep or meaningful
  • noun
  • Top layer of the ground or of water
  • Nature or emotions that show, but may not be true
  • Outside or upper layer of something
  • verb
  • To give (road) a top layer
  • To appear after being hidden, unseen, or unknown
  • To come to the top of something; emerge
  • To come to the top level of water, mud, etc.

tropical

Copy vocabulary

US / ˈtrɒpɪkl /

UK / ˈtrɑpɪkəl /

B1
  • adjecitve
  • Hot and humid; near to the equator

gecko

Copy vocabulary

US / 'ɡekəʊ /

UK / 'ɡekoʊ /

C1
  • noun
  • Small chiefly tropical, nocturnal lizard

you

Copy vocabulary

US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

year

Copy vocabulary

US / jə: /

UK / jɪr /

A1
  • noun
  • Unit of time equal to 12 months or 365 or 366 days
  • Used to refer to the age of a person

trivium

Copy vocabulary

US / 'trɪvɪəm /

UK / 'trɪvɪrm /

A1
  • noun
  • Introductory curriculum at a medieval university involving grammar and logic and rhetoric; considere

how

Copy vocabulary

US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

electronegativity

Copy vocabulary

US / elektrəʊnɪɡə'tɪvɪtɪ /

UK / elektroʊnɪɡə'tɪvɪtɪ /

A1
  • other
  • (Chemistry) The tendency of an atom or radical to attract electrons in the formation of an ionic bon

five

Copy vocabulary

US / faɪv /

UK / faɪv /

A1
  • number
  • 5

fine

Copy vocabulary

US / faɪn /

UK / faɪn /

A2
  • adjecitve
  • Good, acceptable or satisfactory
  • Of high quality; made with great skill
  • In a careful or exact manner; into small pieces
  • Being of high quality
  • Good; okay; no problem
  • (Of weather) good; not raining
  • noun
  • Money you have to pay because you broke a rule
  • verb
  • To pay money because you broke a law

wall

Copy vocabulary

US / wɔ:l /

UK / wɔl /

A1
  • noun
  • High, flat side of a room or building

the

Copy vocabulary

US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

little

Copy vocabulary

US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

let

Copy vocabulary

US / let /

UK / lɛt /

A1
  • verb
  • To allow someone to do something
  • Introducing a suggestion to do something together
  • To rent a house, etc. to others

might

Copy vocabulary

US / maɪt /

UK / maɪt /

A1
  • other
  • Used to politely request an action
  • Used to express that something could happen
  • Power, strength, force or influence

power

Copy vocabulary

US / 'paʊə(r) /

UK / ˈpaʊɚ /

A1
  • noun
  • Legal or official right to perform certain actions
  • Ability to move forcefully and quickly
  • Energy of something (e.g. electricity or fuel)
  • Mathematical way to multiply a number
  • Condition of being in political control
  • Physical force, energy, and strength
  • verb
  • To give energy to something, e.g. by electricity
  • To move something forcefully and quickly

pull

Copy vocabulary

US / pʊl /

UK / pʊl /

A1
  • noun
  • Act of breathing in smoke, as from a pipe
  • Force something has that draws other things to it
  • Using your hands to move something to you
  • verb
  • To breathe in smoke, as from a pipe
  • To hold something and move it toward you
  • To remove something by force

perfect

Copy vocabulary

US / 'pɜ:fɪkt /

UK / ˈpɚfɪkt /

A1
  • adjecitve
  • So good it cannot be improved
  • verb
  • To do something so well, it cannot be done better

one

Copy vocabulary

US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

other

Copy vocabulary

US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

entire

Copy vocabulary

US / ɪn'taɪə(r) /

UK / ɛnˈtaɪr /

A2
  • adjecitve
  • Complete or full; with no part left out; whole

forward

Copy vocabulary

US / 'fɔ:wəd /

UK / ˈfɔrwəd /

A1
  • adjecitve
  • Toward what is ahead; in front
  • Acting in a socially aggressive manner; pushy
  • adverb
  • Toward the front in place; in front
  • Toward a future time; to a more advanced state
  • verb
  • To send something to another address or person

share

Copy vocabulary

US / ʃeə(r) /

UK / ʃɛr /

A2
  • noun
  • Part-ownership in a property, business or company
  • Part of a company you own, shown by a certificate
  • verb
  • To divide something between two or more people
  • To allow others to use your things equally
  • To give information, etc. to someone

over

Copy vocabulary

US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

out

Copy vocabulary

US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

from

Copy vocabulary

US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

form

Copy vocabulary

US / fɔ:m /

UK / fɔrm /

A1
  • noun
  • Sports team or person's current winning record
  • Document you complete when making an application
  • Visible shape or style; type; kind
  • verb
  • To organize something such as a club or group
  • To develop; to come into a shape or substance
  • To make something into a particular shape

anything

Copy vocabulary

US / ˈeniθɪŋ /

UK / ˈɛniˌθɪŋ /

A1
  • pronoun
  • A thing of any kind

two

Copy vocabulary

US / tu: /

UK / tu /

A1
  • number
  • 2

friendly

Copy vocabulary

US / ˈfrendli /

UK / ˈfrɛndli /

A2
  • adjecitve
  • Acting like a friend; kind and helpful
  • noun
  • Game played not in a competition

electron

Copy vocabulary

US / ɪˈlektrɒn /

UK / ɪˈlektrɑ:n /

B2
  • noun
  • A negatively charged particle

toe

Copy vocabulary

US / təʊ /

UK / toʊ /

B1
  • noun
  • One of the five parts at the end of your foot
  • Front part of a sock or shoe

where

Copy vocabulary

US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

nucleus

Copy vocabulary

US / ˈnju:kliəs /

UK / ˈnu:kliəs /

B2
  • noun
  • Center of an atom
  • Control center of a cell
  • Most important part of something larger

leave

Copy vocabulary

US / li:v /

UK / liv /

A1
  • noun
  • Permission to do something
  • Vacation time; time off work
  • verb
  • To go away from; depart
  • To gift property to someone after you die
  • To allow something to continue happening
  • To let something remain unused or available
  • To let something or someone remain somewhere

hide

Copy vocabulary

US / haɪd /

UK / haɪd /

A1
  • noun
  • The skin of an animal used for making leather
  • verb
  • To go to, or put a thing where it can't be found

call

Copy vocabulary

US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

something

Copy vocabulary

US / ˈsʌmθɪŋ /

UK / ˈsʌmθɪŋ /

A1
  • adverb
  • In some degree or measure
  • noun
  • a person or thing of some value or consequence
  • pronoun
  • Thing that is not yet known or named
  • Approximately

lie

Copy vocabulary

US / laɪ /

UK / lai /

A2
  • noun
  • An untrue statement, when you know it is not true
  • verb
  • To be in a horizontal or flat position
  • To say something that you know is not true

forty

Copy vocabulary

US / 'fɔ:tɪ /

UK / ˈfɔrti /

A1
  • number
  • 40

forever

Copy vocabulary

US / fər'evə(r) /

UK / fɔrˈɛvɚ, fə- /

B1
  • adverb
  • For all future time; in the future

until

Copy vocabulary

US / ənˈtɪl /

UK / ʌnˈtɪl /

A1
  • conjunction
  • Up to; to a time when something happens
  • preposition
  • Before (a specific time)

lot

Copy vocabulary

US / lɒt /

UK / lɑt /

A1
  • noun
  • What happens to a person in life from chance; fate
  • A group of people seen together
  • Item for sale at an auction
  • Small area of land used for a purpose e.g. parking

hope

Copy vocabulary

US / həʊp /

UK / hop /

A1
  • noun
  • When you wish something will happen; what you wish
  • verb
  • To expect and want something to happen

hair

Copy vocabulary

US / heə(r) /

UK / her /

A1
  • noun
  • Long thin strands growing on your head or body
  • Short distance; a very small amount

and

Copy vocabulary

US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

match

Copy vocabulary

US / mætʃ /

UK / mætʃ /

A2
  • noun
  • Something that is equal to or the same as another
  • Small stick you strike to light a fire candle etc.
  • A sports competition between two people or teams
  • Person or thing that goes well with another
  • verb
  • To equal or be as good as something else
  • To work well or look good with something else

patchy

Copy vocabulary

US / ˈpætʃi /

UK / ˈpætʃi /

C1
  • adjecitve
  • Happening or existing irregularly

help

Copy vocabulary

US / help /

UK / hɛlp /

A1
  • noun
  • Something given to enable a person to do something
  • Assistance given to someone in need
  • Someone who makes something easier or possible
  • verb
  • To act to enable a person to do something; assist
  • To make something better or less difficult

come

Copy vocabulary

US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

secret

Copy vocabulary

US / 'si:krət /

UK / 'si:krət /

A1
  • adjecitve
  • That you don't want others to know; private
  • noun
  • Information you do not want others to know

most

Copy vocabulary

US / məʊst /

UK / most /

A1
  • adverb
  • Very; extremely
  • Greatest possible degree
  • pronoun
  • Nearly all of something

try

Copy vocabulary

US / traɪ /

UK / traɪ /

A1
  • noun
  • Act of putting the ball over the rugby goal line
  • verb
  • To make an effort, to attempt to do something
  • To examine someone or something in a court of law
  • To test to see if it is good or you like it
  • To make a person go through hardship; test
  • To examine something to see if it works

wait

Copy vocabulary

US / weɪt /

UK / wet /

A1
  • verb
  • To delay or not do something until later
  • To spend time until an expected thing happens
  • To remain in a place until a thing happens

while

Copy vocabulary

US / waɪl /

UK / hwaɪl, waɪl /

A1
  • conjunction
  • In spite of the fact that; although
  • During the time that; at the same time
  • noun
  • Short amount of time

million

Copy vocabulary

US / ˈmɪljən /

UK / ˈmɪljən /

A1
  • number
  • 1,000,000

four

Copy vocabulary

US / fɔ:(r) /

UK / fɔr, for /

A1
  • number
  • 4

will

Copy vocabulary

US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

thousand

Copy vocabulary

US / ˈθaʊznd /

UK / ˈθaʊzənd /

A1
  • number
  • Number 1,000

stick

Copy vocabulary

US / stɪk /

UK / stɪk /

A2
  • noun
  • Long thin piece of wood from a tree
  • verb
  • To push a sharp or pointed object into something
  • To join together using glue or paste
  • To remain in one place or position for a long time

walk

Copy vocabulary

US / wɔ:k /

UK / wɔk /

A1
  • noun
  • Journey on foot done for pleasure or exercise
  • verb
  • To move with your legs at a slowish pace

sodium

Copy vocabulary

US / 'səʊdɪəm /

UK / ˈsodiəm /

B2
  • noun
  • A soft, white chemical element

use

Copy vocabulary

US / ju:s /

UK / ju:s /

A1
  • noun
  • Ability to employ something
  • Need to enable it to work
  • Permission to do something with something
  • Act of spending money
  • Operation of a machine for its function
  • verb
  • To have; to eat, drink, consume etc.
  • To need to operate or work
  • To operate a machine, e.g. a computer
  • To treat a person badly
  • To do something with, for a task or purpose

bond

Copy vocabulary

US / bɒnd /

UK / bɑnd /

A2
  • noun
  • Rope, chain or other thing used to tie someone up
  • Closeness that is shared between people or groups
  • Loan that a government must buy back by a set date
  • Written agreement to pay back borrowed money
  • Joint or connection, often using glue
  • verb
  • To develop a close relationship with
  • To become joined or connected, e.g. using glue

der

Copy vocabulary

US / /

UK / /

A1

day

Copy vocabulary

US / deɪ /

UK / de /

A1
  • noun
  • A period of 24 hours beginning at midnight
  • The period of time when it is light outside
  • Person's name

feel

Copy vocabulary

US / fi:l /

UK / fil /

A1
  • verb
  • To be aware of or experience an emotion, sensation
  • To sense through direct contact; touch

area

Copy vocabulary

US / 'eərɪə /

UK / ˈɛriə /

A1
  • noun
  • Amount of measured space
  • A specific section or space; part of a region
  • A subject or field of study

visit

Copy vocabulary

US / ˈvɪzɪt /

UK / ˈvɪzɪt /

A1
  • noun
  • Trip to a place for a time, usually for a reason
  • verb
  • To go to a place for a time, usually for a reason

particle

Copy vocabulary

US / ˈpɑ:tɪkl /

UK / ˈpɑrtɪkəl /

B1
  • noun
  • Adverb or preposition that joins with a verb
  • Tiny piece or quantity of something

time

Copy vocabulary

US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

for

Copy vocabulary

US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

compound

Copy vocabulary

US / 'kɒmpaʊnd /

UK / kɑmˈpaUnd /

B1
  • adjecitve
  • (Of a term) created by combining two or more words
  • noun
  • Series of buildings that are walled or fenced off
  • Chemical made up of several others
  • Closed walled area, as in a prison
  • Something formed by combining elements/parts
  • Term created by using two or more words together
  • verb
  • To pay interest on a loan including the interest
  • To make something from various parts or components
  • To make a mistake or problem worse

well

Copy vocabulary

US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

within

Copy vocabulary

US / wɪˈðɪn /

UK / wɪðˈɪn, wɪθ- /

A1
  • adverb
  • Inside the limits of an area, time or range
  • preposition
  • From the inside of something

sketch

Copy vocabulary

US / sketʃ /

UK / skɛtʃ /

B1
  • noun
  • Brief account of something without many details
  • A drawing made quickly that lacks detail
  • Brief, funny scene as part of a performance
  • verb
  • To make a rough plan or idea of something
  • To draw images roughly with a pencil

split

Copy vocabulary

US / splɪt /

UK / splɪt /

A2
  • adjecitve
  • No longer married or in a relationship
  • (Injured) by cutting it open, as in someone's lip
  • (Of a decision) when people cannot decide a winner
  • noun
  • Difference of opinion in a group causing a break
  • Separation or a break in something
  • verb
  • To become divided or broken along a straight line
  • To cause a cut in (lip, etc.)
  • To have difference of opinion in a group
  • To separate into two or more pieces
  • To divide something in an even or fair way

those

Copy vocabulary

US / ðəʊz /

UK / ðoz /

A1
  • determiner
  • The people or things we are talking about
  • pronoun
  • The objects far from the speaker

van

Copy vocabulary

US / væn /

UK / væn /

A2
  • noun
  • Truck with an enclosed cargo space

molecule

Copy vocabulary

US / ˈmɒlɪkju:l /

UK / ˈmɑlɪˌkjul /

B2
  • noun
  • Two or more atoms chemically combined

hunt

Copy vocabulary

US / hʌnt /

UK / hʌnt /

A2
  • noun
  • A search for animals to kill for food
  • Person's name
  • verb
  • To search for wild animals to kill (for food)
  • To look for very carefully; search for

eighty

Copy vocabulary

US / 'eɪtɪ /

UK / ˈeti /

A1
  • number
  • 80

stumble

Copy vocabulary

US / 'stʌmbl /

UK / ˈstʌmbəl /

B1
  • noun
  • Failing to do something well, e.g. giving a speech
  • Act of tripping and almost falling
  • verb
  • To fail to perform, e.g. when giving a speech
  • To trip and almost fall

question

Copy vocabulary

US / 'kwestʃən /

UK / ˈkwɛstʃən /

A1
  • noun
  • Issue or problems you are dealing with
  • What you ask about; issue
  • verb
  • To ask for or try to get information
  • To have or express concerns or uncertainty

never

Copy vocabulary

US / 'nevə(r) /

UK / ˈnɛvɚ /

A1
  • adverb
  • Not ever; not at any time

atomic

Copy vocabulary

US / əˈtɒmɪk /

UK / əˈtɑ:mɪk /

B1
  • adjecitve
  • Concerning atoms

strong

Copy vocabulary

US / strɒŋ /

UK / strɔŋ /

A1
  • adjecitve
  • (Of tea or beer) dark or thick
  • Having big muscles; physically powerful

positive

Copy vocabulary

US / ˈpɒzətɪv /

UK / ˈpɑzɪtɪv /

A2
  • adjecitve
  • Showing agreement or support for something
  • Being sure about something; knowing the truth
  • Having the charge produced by electrons
  • Being good or useful
  • Showing that a chemical is present in a test

inch

Copy vocabulary

US / ɪntʃ /

UK / ɪntʃ /

A1
  • noun
  • 1/12th of a foot (2.54 centimeters)
  • Very small distance
  • verb
  • To move or cause to move a small bit at a time

awesome

Copy vocabulary

US / 'ɔ:səm /

UK / ˈɔsəm /

B2
  • adjecitve
  • Great; wonderful; stupendous

combination

Copy vocabulary

US / ˌkɒmbɪ'neɪʃn /

UK / ˌkɑmbəˈneʃən /

B1
  • noun
  • Series of letters or numbers needed to open a lock
  • Act or result of mixing things together

negatively

Copy vocabulary

US / 'neɡətɪvlɪ /

UK / ˈnɛɡətɪvlɪ /

B1
  • adverb
  • In a harmful, unwanted or unhelpful manner

incredible

Copy vocabulary

US / ɪnˈkredəbl /

UK / ɪnˈkrɛdəbəl /

A2
  • adjecitve
  • Very good; amazing
  • Really good; amazing; great
  • Very hard to believe

cool

Copy vocabulary

US / ku:l /

UK / kul /

A1
  • adjecitve
  • Steady and calm when facing difficulties
  • Almost cold; not warm or hot
  • Smart or stylish in a way (young) people admire
  • Unfriendly in an indirect way; distant
  • verb
  • To make something decrease in temperature
  • (Of an emotion, etc.) to become less strongly felt

charge

Copy vocabulary

US / tʃɑ:dʒ /

UK / tʃɑrdʒ /

A2
  • noun
  • An attack by running quickly toward someone
  • A price for a service or goods
  • When a battery has a certain amount of electricity
  • Amount of money you pay for a service
  • verb
  • To run quickly toward someone to attack them
  • To ask for money as a price for a service or goods
  • To put electricity in a battery
  • To give responsibility to take care of or manage
  • To state that someone has committed a crime

somewhere

Copy vocabulary

US / 'sʌmweə(r) /

UK / ˈsʌmˌhwɛr, -ˌwɛr /

A1
  • adverb
  • At or to an unknown or unnamed place

range

Copy vocabulary

US / reɪndʒ /

UK / rendʒ /

A2
  • noun
  • Cooking stove with multiple burners
  • Given distance from a point; how far plane can fly
  • Large grassy area where cattle wander and feed
  • Group or chain of mountains
  • Set of things with something in common
  • Limits within which something extends or varies
  • A set of products, e.g. so that people can choose
  • verb
  • To cover an area from one point to another
  • To extend to or vary within given limits
  • To put things in a row or in line
  • To wander or explore

what

Copy vocabulary

US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

that

Copy vocabulary

US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

like

Copy vocabulary

US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

different

Copy vocabulary

US / ˈdɪfrənt /

UK / ˈdɪfrənt /

A1
  • adjecitve
  • Not of the same kind; unlike other things

even

Copy vocabulary

US / 'i:vn /

UK / ˈivən /

A1
  • adjecitve
  • Being equal in influence, power, possibility etc.
  • Being divided equally or fairly
  • (Of teams/contest) with similar chances of success
  • Smooth, level, or regular
  • Can be divided by 2; ending in 2, 4, 6, 8, or 0
  • At a regular, equally steady manner
  • Remaining steady and unchanging
  • adverb
  • (When this is surprising) as well; too
  • (Used to compare two things/stress the difference)
  • verb
  • To make something level; to flatten
  • To make something equal

uncharged

Copy vocabulary

US / 'ʌn'tʃɑ:dʒd /

UK / ʌn'tʃɑ:dʒd /

A2
  • adjecitve
  • With no electricity; dead (battery)

family

Copy vocabulary

US / 'fæməlɪ /

UK / ˈfæmli /

A1
  • noun
  • Close group of people or organizations
  • A group of people who are related through blood
  • Group of related plants or animals

during

Copy vocabulary

US / ˈdjʊərɪŋ /

UK / ˈdʊrɪŋ, ˈdjʊr- /

A1
  • preposition
  • At some point in the course of an event or thing

force

Copy vocabulary

US / fɔ:s /

UK / fɔrs, fors /

A1
  • noun
  • Group of persons trained for military action; army
  • Pressure; attraction
  • The use of physical strength/violence to persuade
  • verb
  • To use physical strength or violence to persuade

each

Copy vocabulary

US / i:tʃ /

UK / itʃ /

A1
  • determiner
  • Every one of two or more things
  • pronoun
  • Per one person or thing

emerge

Copy vocabulary

US / ɪ'mɜ:dʒ /

UK / ɪˈmɚdʒ /

A2
  • verb
  • To rise or appear out of some background

specie

Copy vocabulary

US / 'spi:ʃi: /

UK / 'spi:ʃɪ /

B1
  • noun
  • Singular of species

hit

Copy vocabulary

US / hɪt /

UK / hɪt /

A1
  • noun
  • A planned killing, usually for money
  • Song, movie etc. that is successful
  • When someone strikes someone or something
  • Time when a player makes contact with the ball
  • Time when a website is accessed
  • verb
  • To have a negative impact on a person/place/thing
  • To press something, such as a button or switch
  • To suddenly realize the importance of something
  • To move your hand, a bat, etc. against with force
  • To fight, attack or damage something or someone
  • To arrive at a specific place, level, or goal
  • To make contact with the ball in a game or sport

sticky

Copy vocabulary

US / ˈstɪki /

UK / ˈstɪki /

B1
  • adjecitve
  • Easy to adhere or stick to other things
  • (Of weather/a day) uncomfortably hot and humid

oxygen

Copy vocabulary

US / 'ɒksɪdʒən /

UK / ˈɑksɪdʒən /

B1
  • noun
  • A gas in the air that we need to breathe

primarily

Copy vocabulary

US / praɪˈmerəli /

UK / praɪˈmɛrəli, -ˈmɛr- /

A2
  • adverb
  • In the most basic or important way

enough

Copy vocabulary

US / ɪˈnʌf /

UK / ɪˈnʌf /

A1
  • adjecitve
  • Sufficient to answer the need
  • adverb
  • To a satisfactory degree
  • pronoun
  • Equal to what is needed; as much as required
  • Adequate number or amount

find

Copy vocabulary

US / faɪnd /

UK / faɪnd /

A1
  • noun
  • Object discovered by chance
  • Things that have been discovered from searching
  • verb
  • To become aware of something that is happening
  • To discover or meet by chance
  • To decide if someone is guilty of a crime, or not
  • To learn through study, research, or effort
  • To discover something by looking for it

attract

Copy vocabulary

US / ə'trækt /

UK / əˈtrækt /

A2
  • verb
  • To make something move closer using magnetic force
  • To make someone notice and become interested in

hydrogen

Copy vocabulary

US / ˈhaɪdrədʒən /

UK / ˈhaɪdrədʒən /

B1
  • noun
  • Lightest of all chemical elements

clever

Copy vocabulary

US / 'klevə(r) /

UK / ˈklɛvɚ /

A1
  • adjecitve
  • Funny in a way that shows intelligence
  • Showing intelligence; quick to understand or learn

cause

Copy vocabulary

US / kɔ:z /

UK / kɔz /

A2
  • noun
  • Belief, goal or organization that people support
  • Reason for
  • verb
  • To make something happen; create effect or result

element

Copy vocabulary

US / 'elɪmənt /

UK / ˈɛləmənt /

A2
  • noun
  • Essential or particular part of something

action

Copy vocabulary

US / 'ækʃn /

UK / ˈækʃən /

A2
  • noun
  • Something that a person or thing does
  • verb
  • To act to do something

house

Copy vocabulary

US / haʊs /

UK / haʊs /

A1
  • noun
  • Place where a specific activity or business occurs
  • Building in which a family, person lives
  • verb
  • To give someone a place to live
  • To contain or store something
  • Subtitles section
  • Oh little kitty, what are you trying to do?
  • Kitty wanna be gecko man!
  • I understand, but to stick like geckos, you need to have super powers like geckos.
  • How?
  • Let me share the secret with you all, by answering a sticky question.
  • How do geckos stick to walls?
  • Zoom in!
  • Geckos, which belong to the lizard family, come in all shapes and sizes, ranging from little two inch creatures to gigantic twenty four inch ones.
  • These creatures emerged during the dinosaur era, between hundred and eighty to two hundred and twenty five million years ago, primarily in tropical and subtropical areas.
  • Fast forward to today, geckos can be found all around the world, and they might even pay a visit to our houses!
  • Yes, you could stumble upon one of these awesome creatures chilling on your rooftop, casually crawling up your walls or even
  • staging epic insect hunts akin to a miniature action movie.
  • This leaves us pondering, how in the world can geckos stick to nearly anything without the use of glue, tapes or spider webs?
  • Well, the answer to this sticky question is hidden in the principle that positive and negative charges attract each other.
  • It's the same attraction that holds compounds like table salt together, which consists of positively charged sodium ions bonding with negatively charged chloride ions.
  • Wait a minute, but the gecko's feet and the surfaces they walk on aren't charged.
  • So, what's the secret behind their stickiness?
  • The answer to this lies in the way their feet are engineered and some clever combination of intermolecular forces called Van der Waals forces.
  • And what is that?
  • You see, all those elements we find on the periodic table have different feelings for electrons.
  • Some elements, like oxygen, pull them closer while others, like hydrogen, aren't as interested in them.
  • This chemical property of elements attracting electrons towards themselves is called electronegativity.
  • However, electrons are skilled at recognizing which atoms want them the most and choose to be pulled toward the atoms with higher electronegativity within a molecule.
  • This creates a thin spot in the electron cloud, where the positive charge from the atomic nuclei becomes apparent and a lump of extra electrons forms somewhere else.
  • The cool thing is that the entire molecule doesn't become charged.
  • But it does have charged areas that are slightly positive and other areas that are slightly negative.
  • These patchy charges can cause neighboring molecules to feel attracted to each other.
  • They'll cozy up so that the positive areas on one molecule match with the negative areas on the other.
  • These friendly, uncharged molecule to molecule attractions are called Van der Waals forces.
  • They aren't as strong as the forces between charged particles, but when you have lots of them, they can really add up.
  • But how does it help geckos with incredible stickiness?
  • Well, thanks to the gecko's toes that are covered in microscopic hairs known as setae, which have hundreds of even finer spatula shaped split ends.
  • When geckos bring their feet near the wall's surface, the spatulas hit the perfect angle of the van der Waals forces to cause the opposite charges to stick together.
  • These forces are weak, but when summed up over millions of hairs, they are enough to attach a lizard to a wall.
  • TRIVIA TIME!
  • Did you know there are around one thousand four hundred and fifty species of geckos?
  • Yes, and out of them, around forty percent have non stick feet.
  • It's sketching time.
  • Today's sketch of the day goes to Anika.
  • Hope you learned something that will stick with you forever.
  • Until next time, it's me, Dr. Binox, zooming out.
  • Never mind.