Environmental Science Exam 3

What are the four gases that make up 99% of clean dry air?

• oxygen, nitrogen, hydrogen, CO2

• argon, nitrogen, hydrogen, oxygen

• argon, oxygen, nitrogen, CO2

• nitrogen, argon, hydrogen, CO2

Of the top four gases in the atmosphere, which is the most common?

• oxygen

• nitrogen

• carbon dioxide

• argon

Lowest layer of earth's atmosphere; continuous flow and swirling of air which causes weather patterns. (ground-level)

Tags

NGSS.MS-ESS2-5

Layer of the atmosphere that extends from the troposphere; almost no water vapor; temperature increases with height.

The top of the stratosphere is bound by a boundary known as the...

Layer above the stratosphere; extends about 85km above the earth's surface; no ozone molecules.

This layer is known as the upper atmosphere; very hot as you get higher, but would feel cold due to thin atmosphere; between 85km and 600km.

A molecule in which three oxygen molecules are bonded together (O3).

Tags

NGSS.MS-PS1-1

Least harmful UV; results in sunburns and skin damage; transmitted through the atmosphere to the earth's surface.

• UV-A

• UV-B

• UV-C

Tags

NGSS.MS-PS4-2

Most harmful and energetic, but highly absorbed by the thermosphere and stratosphere so it does not reach earth's surface; responsible for splitting oxygen in the stratosphere creating ozone.

• UV-A

• UV-B

• UV-C

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4