What is the scientific word for when water falls from the sky? Hint: The answer is not rain!
Precipitation
100
What gas do humans breathe in?
Oxygen
100
Matter is anything that takes up ________.
Space
100
What should you add to turn a solid into a liquid (to make it melt): heat or cold?
Heat
100
Can you see gases?
No, they are invisible.
200
What is it called when water gets warmed by the sun and changes into an invisible gas?
Evaporation
200
Does air take up space?
Yes
200
Do solids have a definite shape?
Yes
200
What is the liquid form of a popsicle?
Juice
200
True or False: Gases do not spread out to fill their container.
False. Gases do spread out to fill their container.
300
What is it called when water vapour rises up, cools down into water droplets, and forms clouds?
Condensation
300
What gas do humans breathe out?
Carbon dioxide
300
What is the solid state of water?
Ice (or snow)
300
If you pour water out of a glass onto the ground, what will happen to the shape of the water? Hint: Think of what happens to rain when it falls on the ground.
It will spread out to form a puddle.
300
True or false: air is a gas
True
400
What are four forms of precipitation?
1. hail
2. snow
3. sleet
4. rain
400
What is the name of the gas that makes your balloon fly away when you let go of it?
Helium
400
Are the molecules in a solid close together or far apart?