Show:
Weathering
Soil
Mass Movement
Soil Profiles
Soil erosion
100
The process that occurs when physical forces break rock into smaller pieces without changing the rock’s chemical composition
What is Mechanical Weathering
100
Zones or layers of soil
What is soil horizons
100
The force that is responsible for mass movement
What is gravity
100

regular order of horizons in a soil profile

What is O, A, E, B, C, and D

100

Compared to the past soil erosion rates have...? (increase/decrease)

increased

200
The weathering process that involves the constant freezing and thawing of water?
What is Frost Wedging
200
composes most of the dead organic matter in soil
What is plants
200
The transfer of rock and soil downslope due to gravity
What is mass movement
200

Composed of the bedrock

What is the R horizon

200

what is the type of mass movement that leaves a scarp?

what is slump

300
The gradual rounding of the corners and edges of angular blocks of rock
What is Spheroidal Weathering
300

The second horizon in a well developed soil profile

What is the A horizon

300
the slowest of all the mass movements
What is creep
300
consists of the subsoil
What is the B Horizon
300
To curb soil erosion people have planted trees in lines forming...?
What is Windbreaks
400
When water freezes, its volume ...?
What is Increases
400
A soil’s texture is determined by it's...?
What is particle size
400
Mass movements involving large amounts of water
What is a flow
400

makes up the A and O horizon

What is topsoil

400

_________ is responsible for 2/3 of erosion in the US

What is water

500

Half Dome is an example of...?

What is Sheeting

500

The factor that has the greatest effect on soil formation is...?

What is the climate

500
The covering of rock and minerals that covers most of earth's land surfaces
What is the regolith
500
dead organisms that make up 5% of soil
What is humus
500

the four controls of soil erosion rate

What is soil characteristics, climate, slope, and vegetation