How can you get salt out of a cup of salt water?
Water evaporation
What is your favorite science subject? Why?
...
Does salt disappear magically when you put it in water?
No, it transforms into water because of its components
Yes, it does.
No, it dissolves
A diamond is a...
Piece of ice
Gas
Crystal
Liquid
Our hair is as strong as...
Steel
The Moon
Iron
Aluminium
What does it mean when we say that a material is 'synthetic'?
It can't be made by humans
It's made by aliens
It can be found in nature
It's made by humans
Metal is very good at ____ heat
Making
Erasing
Conducting
Eating
What do you think we should do to fix the plastic bags issue?
...
Which change is ireversible?
Melting ice
Turning water into ice
Going to sleep
Cooking an egg
Materials can melt into liquid as they _____ __ , and freeze solid as the get ____
heat up - colder
heat up - heat up
colder - colder
colder - heat up
When a warm material touches a cooler one, heat spreads from one object into another. True or false?
True
Is the Eiffel Tower always the same height?
It gets a little taller in the winter because of the heat
Yes, it is.
It gets a little taller in the winter because of the cold
It gets a little taller in the summer because of the heat
A material's properties decide what it's ___ for
usefully
using
use
useful