Air pressure, Temperature and Ozone

Air pressure________________ as altitude increases, due to the lower density of air molecules.

• stays the same

• increases

• never changes

• decreases

Why would you have more trouble breathing at the top of a mountain than you would at sea level?

• Oxygen is more dense at the mountaintop.

• Oxygen is less dense at the mountaintop.

• Carbon dioxide is more dense at the mountaintop.

• Carbon dioxide is less dense at the mountaintop.

What gas is the MOST abundant in the Earth’s atmosphere?

• oxygen

• carbon dioxide

• argon

• nitrogen

An instrument used to measure changes in air pressure is:

• Thermometer

• Barometer

• Anemometer

• Wind Vane

The pressure caused by the weight of a column of air pushing down on an area:

• Water Pressure

• Air Pressure

• Density

• Friction

The amount of force pushing on an area is:

• Pressure

• Friction

• Gravity

• Density

A form of oxygen that has 3 oxygen atom in each molecule instead of the usual 2:

• water vapor

• oxygen gas

• ozone

• carbon dioxide

What force pulls air molecules to the ground?

• Friction

• Gravity

• Balanced

The Earth's atmosphere protects life from harmful uv radiation.

• TRUE

• FALSE

Which statement is true about air in the mountains?

• It is more dense than air at lower elevations

• It has less oxygen than the same amount of air at a lower elevation

• It has lower temperature than air at lower elevations

• It has greater air pressure than air at lower elevations