Weathering
EROSION
SOIL PROFILE
AGRICULTURE
Massmovent
100

Two types of weathering

What is Physical/mechanical and Chemical?

100

The movement of sediments from one place to another

What is erosion?

100

A soil profile contains one or more of these sections.

What are soil horizons?

100

Two general types of farming practices. 

What is Traditional (conventional, industrial) and Sustainable (regenerative, organic)?

100

The movement of sediments down a slope due to the force of gravity 

What is mass movement?

200

Rock breaking apart by plants roots

What is an example of physical weathering?

200

One way to avoid soil erosion

What is plant cover crops to hold the soil in place, no till farming, shelterbelt, contour plowing, etc.?

200

This horizon is made up of bedrock and contributes parent material to the horizon above it.

What is the C horizon?

200

A single plant species cultivated in a large area of land.

What is a monoculture?

200

The slow mass movement of soil down a hillside.

What soil creep?

300

The breaking down of rock by acid rain

What is an example of chemical weathering (carbon?

300

Event that occured in the 1930's due to poor farming practices and drought

What is the dust bowl?
300

This horizon is commonly called subsoil.

What is the B horizon?

300

A planned cropping sequence with different crops planted each year.

What is crop rotation?

300

Evidence of this mass movement = Bent tree trunks & slanted fence or telephone posts

What is soil creep?

400

Water seeping into the cracks of rocks and freezing, then thawing, freezing, thawing, until the rocks breaks apart. 

What is ice wedging or frost action?

400

One way to avoid river bank erosion

What is plant vegetation along the edge of the bank, build a rock wall along the bank, decrease overgrazing of cattle near rivers?

400

This horizon is characterized by darker color rich in decomposed organic material 

What is the O horizon (humus)?

400

Sustainable Farmers can use this to add nutrients and organic matter to soil.

What is animal waste?

400

The sudden movement of a mass of rock, debris, or earth down a slope.

What is landslide?

500

type of weathering shown

What is wind abrasion?

500

Why should farmers be concerned about soil erosion?

1 cm of soil takes 100-400 years to form, farmers need soil to crow crops, must maintain and conserve the soil today so that it remains for future generations

500

Common name for the A horizon

What is topsoil?

500

Two problems with monocultures

What is loss of biodiversity, crops suseptible to diseases, lack of nutrients in the soil,?

500

Masses of snow, ice, and rocks that fall rapidly down a mountainside

What is an avalanche?