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