APES Unit 4 Vocab

Front

Geologic materials from which soil horizons form.

Back

Parent Material

Front

Formed of weathered rock and organic material; often called topsoil.

Back

Horizon

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Front

Vertical soil section exposed by a pit

Back

Soil Profile

Tags

NGSS.MS-ESS2-2

Front

These separate into: gravel, sand, silt, clay.

Back

Four Types of Soil Texture

Front

Retained on soil particle surfaces; negative charges bind positively-charged atoms/molecules, allowing exchange with others in soil water.

Back

Cation Exchange

Tags

NGSS.MS-LS1-5

Front

Lowest densest part of Earth's atmosphere where most weather changes occur, extending from the surface to about 7 miles high.

Back

Troposphere

Tags

NGSS.MS-ESS2-5

Front

Second layer of the atmosphere going upward.

Back

Stratosphere

Front

Burns up most meteors and asteroids before reaching Earth's surface. Coldest atmospheric layer, freezing water vapor into ice clouds.

Back

Mesosphere

Front

Part of the atmosphere starting 50 miles above Earth, extending to space, with rising temperatures:

Back

Thermosphere

Front

The uppermost region of Earth's atmosphere fading into space.

Back

Exosphere