AP Environmental Unit 4

Which of the following is NOT one of the three types of soil?

• clay

• sand

• silt

• mud

Humus is.....

• the dead parts of plants and animals in soil.

• A food we eat with pretzels.

• The tiny particles inside of soil

• The roots that come off of a plant and live in soil.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Layers of soil are also known as:

• Soil Profiles

• Soil Horizons

• Soil sheets

• Soil cores

Made of small fine soil particles & other organic matter. Plant roots, fungi, & earthworms live in the horizon. It is typically 2-10ft deep.

• A Horizon

• C Horizon

• Bedrock

• O horizon

• B Horizon

Made of humus, clay, & minerals (iron/aluminum). Nothing grows here, typically red/brown color, & 10-30ft deep.

• A Horizon

• C Horizon

• Bedrock

• O horizon

• B Horizon

Made of broken up rocks & parent material. Nothing lives in & it is typically 30-48ft deep.

• A Horizon

• C Horizon

• Bedrock

• O horizon

• B Horizon

Made of solid rock & nothing lives in the layer

• A Horizon

• C Horizon

• Bedrock

• O horizon

• B Horizon

The air we breathe is made mostly of:

• argon

• carbon dioxide

• nitrogen

• oxygen

How does the ozone layer benefit living things on the Earth.

• We need it to breathe.

• It keeps the Earth cool.

• It is a source of rain.

• It protects the Earth from ultraviolet rays.

Which layer of the Earth's atmosphere does most weather occur?

• mesosphere

• stratosphere

• thermosphere

• troposphere

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6