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WorksheetsUnderstanding Hot Air Balloons
Total questions: 10
Worksheet time: 5mins
What is inside a hot air balloon that makes it float?
Hydrogen
Special gas
Helium
Just air
What are molecules?
Drops of water
Bubbles of air
Large particles
Tiny invisible particles
What happens to air molecules when they heat up?
They move slower
They move faster
They disappear
They change color
Why does the hot air balloon rise?
The hot air inside is less dense than outside
Magic
Because it's big
It has wings
What does the pilot do to make the balloon go up?
Turns on the flames to heat the air
Flaps the wings
Pumps water
Adds more air
What is matter?
Anything that takes up space
Only solids
Imaginary stuff
Only liquids and gases
How does the balloon come back down?
The pilot opens a flap to let hot air out
The pilot climbs down
It never comes down
The air cools down
What is the role of the heater in a hot air balloon?
To light up the balloon
To heat the air inside the balloon
To keep the passengers warm
To cook food
What is true about warm air?
It sinks
It stays the same
It rises
It turns into liquid
What can you say about air?
It doesn't exist
It is made of matter
It is nothing
It is only inside balloons
