Hot Air Balloons

Which of the following are true? Choose all of the correct answers.

• Air is matter.

• Air is a gas.

• Air takes up space.

• Air is invisible.

Tags

NGSS.MS-PS1-4

What state of matter can be found inside a hot air balloon?

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

Which of these pictures would best represent what the molecules of air look like inside the hot air balloon? (gas molecules)

• 
• 
• 

Tags

NGSS.MS-PS1-1

To make the air in the hot air balloon less dense than the air around it, it must be heated.

• True

• False

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What happens when the air in the hot air balloon becomes less dense than the air around it?

• The balloon is able to float in the air.

• The balloon stays on the ground.

• The balloon sinks in the air.

• The balloon starts to deflate.

Tags

NGSS.MS-PS1-4

When matter is heated what happens to the molecules in that matter? (Choose all the correct answers.)

• The molecules slow down.

• The molecules move faster.

• The molecules spread out and take up more space.

• The molecules squish together and take up less space.

Tags

NGSS.MS-PS1-4

True or False - Hot air balloons are a good way to travel long distances.

• True

• False

Tags

NGSS.MS-ESS2-5

How does a hot air balloon come back down?

• The pilot uses a motor to fly it back down.

• A hole is opened at the top which lets cold air back into the balloon.

• The pilot pokes holes in the balloon until it deflates.