Which of the gases below is the most ABUNDANT in our atmosphere?

• nitrogen

• oxygen

• carbon dioxide

• argon

Which hikers has the LEAST amount of pressure on them?

• top

• middle

• bottom

As the altitude increases, what happens to the density of the air?

• it increases and molecules are closer together

• it decreases and molecules are further apart

• stays the same

Which layer of our atmosphere has the ozone layer in it? (ozone protects us from the harmful UV rays of the sun)

• troposphere

• mesosphere

• thermosphere

• stratosphere

Which layer contains the weather on Earth and is constantly changing?

• troposphere

• mesosphere

• thermosphere

• straosphere

Which layer has air that is the most dense?

• thermosphere

• mesosphere

• stratosphere

• troposphere

Which answer below lists the layers of the atmosphere in the correct order (A-D)

• A thermosphere B mesosphere C stratosphere D troposphere

• A thermosphere B stratosphere C mesosphere D troposphere

• A troposphere B mesosphere C stratosphere D thermosphere

• A troposphere B stratosphere C mesosphere D thermosphere

What is the key word for CONVECTION?

• touch

• distance

• fluid (water or liquid)

What is the key word for CONDUCTION?

• touch

• at a distance

• fluid (water or liquid)

What is the key word for RADIATION?

• touch

• at a distance

• fluid (water/ liquid)