The amount of water vapor in the air

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

An instrument that measures atmospheric pressure

The uppermost layer of the atmosphere, in which temperature increases as altitude increases

The 3rd layer of Earth's atmosphere immediately above the stratosphere

2nd layer of atmosphere; extends from 10 to 30 miles up; location of ozone layer; absorbs 95% of Ultraviolet radiation; temperature increases with altitude increase.

The lowest layer of Earth's atmosphere

Gases such as carbon dioxide, methane, nitrous oxide, water vapor, and ozone in the atmosphere which are involved in the greenhouse effect.

Fluffy, white clouds, usually with flat bottoms, that look like rounded piles of cotton.

look like flat blankets and are usually the lowest clouds in the sky

Wispy, feathery clouds made of ice crystals that form at high levels.

Are rain bearing clouds that are dark and ragged at the edges.

a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun