Air pressure & global winds - check point from notes

What is air pressure?

• The speed of air particles hitting a surface

• The force exerted on you by the weight of tiny particles of air

• The temperature of the air around you

• The humidity level of the air

What is true about the space between air molecules?

• It is completely filled with smaller particles.

• It is a vacuum with no particles at all.

• There's a lot of "empty" space.

• It is densely packed with air molecules.

Approximately how much air pressure is exerted on you at any given moment?

• 200 lbs.

• 500 lbs.

• 1000 lbs.

• 2000 lbs.

When air is compressed______________

• It is said to be "under low pressure"

• It is said to be "under moderate pressure"

• It is said to be "under high pressure"

• It is said to be "under variable pressure"

Tags

NGSS.MS-PS3-4

Where is the air pressure higher?

• At the altitude of Mt. Everest

• At sea level

• At the altitude of 10 miles

• The air pressure is the same at sea level and Mt. Everest

What instrument do weather forecasters use to measure air pressure?

• Thermometer

• Barometer

• Hygrometer

• Anemometer

What happens to air pressure as altitude increases?

• It increases

• It decreases

• It remains constant

• It fluctuates unpredictably

What is the effect on air pressure when the temperature increases?

• Air pressure increases

• Air pressure decreases

• Air pressure does not change

• Air pressure becomes erratic

Tags

NGSS.MS-ESS2-6

How does humidity affect air pressure?

• Air pressure increases with humidity

• Air pressure decreases with humidity

• Air pressure is not affected by humidity

• Air pressure fluctuates with humidity

Tags

NGSS.MS-ESS2-5

What happens to air, like most other substances, when it is heated?

• It contracts and becomes denser.

• It expands and becomes less dense.

• It remains unchanged in volume and density.

• It expands and becomes denser.

Tags

NGSS.MS-PS1-4