Have you ever shaken up a carbonated drink and had it explode on you?

Do you think adding salt to ice water would make the ice melt faster or slower?

What is your favorite science experiment to do at home?

Have you ever tried the metal ring and chain experiment shown in the video?

How do you think the ice cube melting experiment relates to real-life situations?

Listening for the  main ideas

What was the pressure reading in the bottle before it was shaken?

Why did the pressure remain the same after shaking the bottle?

What do the other scientists think about the explanation published in New Scientist in 1986?

How does adding salt to water affect the temperature of the solution?

Which ice cube melted faster, the one in fresh water or the one in saltwater?

Why does the ice cube in fresh water melt faster than the one in saltwater?

How can you get the metal ring to stick on the closed loop of chain?

Listening for the details

Fill in the correct word from the video.  !!!The sentences are from dictionaries, not the video itself!!!

to burst or make something burst loudly and violently, causing damage 

The fireworks (verb)  ____________ed in his hand.

(often in compounds) an instrument for measuring the amount or level of something 

a fuel/petrol/temperature, etc. pressure (noun) ___________

to make important changes in an organization, a profession, etc. in order to make it more efficient  

The whole industry needs (verb)  ______ing  up.

to have an idea that something is probably true or likely to happen, especially something bad, but without having definite proof               

If you (verb)______________________a gas leak, do not strike a match or even turn on an electric light.

the person or thing that makes something happen

It’s not an increase in pressure that (verb) ______s bottle to explode

Unemployment is a major (noun) ______________of poverty.

to say that something will happen in the future (verb)

synonym forecast

__________________something a reliable method of _____________ing earthquakes

Nobody could ________________the outcome.

making you confused or worried because you do not understand something   (adjective)

a ___________________problem

similar in every detail (adjective)

a row of ________________houses

following a pattern, especially with the same time or space in between each thing and the next (adjective)

a _______________pulse/heartbeat

​  [usually before noun] containing no salt (adjective)

There is a shortage of _______________water on the island.

a liquid in which something is dissolved  (noun)

an alkaline  _______________

to become or make something become liquid as a result of heating (verb)

The snow showed no sign of ________________ing.

to have a meaning that you can easily understand (verb plus noun)

This sentence doesn't ________________

to move or turn around a central fixed point; to make something do this (verb)

Stay well away from the helicopter when its blades start to ___________

to move easily over a smooth or wet surface; to make something move in this way (verb)

The drawers  ____________________  in and out easily.

to move, or to move something, into a particular position quickly, especially with a sudden sharp noise (verb)

His eyes _________________          open

not moving; not intended to be moved (adjective)

This bottle has been sitting (adjective) ____________