How Heavy is Air - questions from TED ED

The air in a typical gymnasium can weigh as much as...

• a brick

• an elephant

• a bicycle

• a blue whale

Which of the following flows is NOT driven by pressure differences?

• a deep breath

• a river

• a gust of wind

• a sip through a drinking straw

Which of the following is NOT a fluid?

• air

• water vapor

• liquid water

• ice

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If you filled a balloon on Earth and brought it to the moon, it would ________.

• expand

• shrink

• stay the same size, with the same internal pressure

• stay the same size, but with a different internal pressure

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NGSS.MS-PS1-4

Which of the following is the largest number?

• air molecules in your lungs

• stars in the galaxy

• grains of sand on Earth

• insects alive on the planet.

Air and water are both fluids, but that doesn’t mean they always behave the same way. Name three ways in which air and water are similar and three ways in which they differ.

Based on what you learned about the molecular origins of pressure, do you think that heating a fluid will increase or decrease the pressure? Why?

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

How might you design a pressure sensor, that is, a device that measures the pressure at a point in a fluid?

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NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

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NGSS.MS-ETS1-4