TED Ed How Heavy is air

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

• A brick

• An Elephant

• A bicycle

• A blue whale

Which of the following is not a fluid?

• air

• water vaport

• liquid water

• ice

What causes wind? Heat from the ___________

• sun

• middle of earth

• Fire

Wind is also created by ? Rotation of the

• sun

• earth

• moon

Which of the following is the largest number?

• Air molecules in your lungs

• stars in the galaxy

• insects on earth

• grains of sand on earth

True or False: Pressure moves from areas of low pressure to areas of high pressure

• true

• false

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