AnswersEAP - VA - Earth Science B CRUnit Test

Weathering and Soil Answers

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Which factor contributes to both chemical and mechanical weathering?

A
abrasion
B
freezing
C
oxidation
D
water
2
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Which is one factor that scientists use to classify orders of soil?

A
fertility
B
climate
C
dryness
D
bedrock
3

The map shows the Soils of America.

Question illustration
A
frozen
B
sandy
C
weathered
D
young
4

Organic material provides nitrogen for plants. Which soil component contributes the most nitrogen to plants?

A
clay
B
humus
C
sand
D
silt
5

Which describes the formation of Horizon B?

A
forms at the surface
B
features parent material
C
undergoes the most change
D
forms due to decomposed material
6

Which describes the horizons in a soil profile?

A
Horizon A is mineral deficient.
B
Horizon O forms from organic material.
C
Horizon B undergoes the least amount of change.
D
Horizon C is most affected by the soil formation process.
7

Which describes how weathering and erosion are different?

A
Weathering is caused by water.
B
Erosion is caused by wind and ice.
C
Erosion transports sediments.
D
Weathering is a natural process.
8

Which property of soil depends on the size of particles?

A
color
B
odor
C
temperature
D
texture
9

What is one of the causes of mechanical weathering?

A
acid rain
B
oxidation
C
animal actions
D
carbon dioxide
10

Which correctly lists the three parts of soil that are classified by their particle size?

A
bedrock, humus, and clay
B
clay, bedrock, and silt
C
humus, sand, and clay
D
sand, clay, and silt

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