hot Air Balloon. Q12

What is the weight of a 1 square meter column of air from the ground to the edge of Earth's atmosphere?

• About 1 ton

• About 20 tons

• About 5 tons

• About 10 tons

Why does hot air rise?

• It is magnetic

• It is static

• It is heavier than cold air

• It is lighter than cold air

According to the ideal gas law, what happens inside a balloon when it is heated?

• The pressure increases

• The pressure decreases

• The balloon shrinks

• The air freezes

Tags

NGSS.MS-PS1-4

What principle explains why hot air balloons rise?

• Buoyancy

• Gravity

• Electricity

• Magnetism

What commonality do humans and fish share according to the video?

• Both can fly

• Both are mammals

• Both live in a fluid

• Both have gills