gas pressure

What is the equation used to calculate pressure?

• pressure= force/mass
• pressure =mass/volume
• pressure=area/force
• pressure=force/area

Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations.

• True
• False

___________is the result of the weight of a column of air pushing on an area.

• air pressure
• density
• volume
• none of the above

In what direction(s) does air exert pressure?

• everywhere
• no where
• there is no pressure
• downward

As you climb up a mountain what happens to the air pressure?

• decreases
• increases
• stays the same

Why is it hard to breath at high altitudes?

• There is too much oxygen in this location.
• There is a higher density of air molecules.
• There is a low density of air molecules.
• The air pressure is greater than at low altitudes.

Pressure is the effect of

• the weight of all the air above pressing in every direction

• water vapor in the atmosphere

• greenhouse gases

• solar radiation

What is another word for altitude?

• elevation
• barometer
• circumference
• weight

What is the unit of measurement for pressure?

• pascal
• grams
• milliters
• meters

What pressure does a 4000N horse exert on the ground if each foot is 10cm²?

• 40 N/cm²

• 100 N/cm²

• 400 N/cm²

• 10 N/cm²