Hot Air Baloon

What is air made of?

• Magic particles

• Invisible strings

• Nothing at all

• Matter, like everything else

What happens to air molecules when they are heated?

• They slow down

• They move faster and spread out

• They change color

• They disappear

Why does the hot air balloon rise?

• Because it is pushed by the wind

• Because it has an engine

• Because it is filled with helium

• Because the air inside is less dense than outside

How does the pilot make the balloon go down?

• By opening a flap to let hot air out

• By adding more hot air

• By turning on a fan

• By pulling a rope

What makes hot air balloons and science amazing?

• They are noisy

• They are fast

• They are colorful

• They are big and float with tiny molecules