# The Atmosphere

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Conceptual Physics Chapter 20 : Gases Section 1 : The Atmosphere

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• 1.
What would happen without the Earth's gravity?
• A.

The atmosphere would cool and end up as matter on the ground.

• B.

The atmosphere would fly off into the outer space.

• C.

The gaseous state of the atmosphere would change into a liquid state.

• D.

The atmosphere's motion would slow down.

• 2.
Had it not been for the __________ , the atmosphere would have frozen.
• 3.
Like the ocean, Earth's atmosphere has an indefinite surface.
• A.

True

• B.

False

• 4.
The density of Earth's atmosphere __________
• A.

Decreases with altitude just as the ocean's density decreases with depth.

• B.

Increases with altitude just as the ocean's density increases with depth.

• C.

Stays the same at any altitude just as the ocean's uniform density.

• D.

Decreases with altitude unlike the ocean's uniform density at any depth.

• E.

Increases with altitude unlike the ocean's uniform density at any depth.

• 5.
__________ is the most plentiful element in the universe.
• 6.
With altitude, the atmosphere's temperature decreases infinitely.
• A.

True

• B.

False

• 7.
If Earth were an apple, the skin of this apple would be the __________ .
• 8.
The density of gas in the vacuous regions of interplanetary space is one molecule per cm
• A.

True

• B.

False

• 9.
Which of the following is true about someone who is at an altitude of 30 km?
• A.

The ozone layer is above him.

• B.

The ozone layer is below him.

• C.

The atmosphere's percentages below and above him are roughly the same.

• D.

Almost, all the atmosphere is below him.