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Erosion and Soil

Total questions: 19

Worksheet time: 12mins

Name
Class
Date
1.
The definition of weathering is _______________________.
a)
the carrying away of rock
b)
the leaching of rock
c)
the breaking down of rock
d)
the permeability of rock
2.
The growth of plant roots and animal activity may result in ________________.
a)
erosion
b)
mechanical weathering
c)
chemical weathering
d)
abrasion
3.
The most important factors in determining the rate of weathering are _____________________.
a)
carbon dioxide and acid rain
b)
abrasion and acids from plant roots
c)
animal actions and oxygen
d)
rock type and climate
4.
In the fall, Winston noticed a small crack on a boulder where he played in his backyard. The following spring, he saw that the small crack was much larger than he remembered. What most likely caused the change?
a)
gravity had caused the rock to shift
b)
acid rain had caused the crack to erode
c)
winds had caused the rock to break down
d)
water had frozen and thawed inside the rocks
5.
What is the relationship between wind erosion and plant cover?
a)
More plants means less erosion
b)
More plants means more erosion
c)
There is no relationship
d)
Less plant cover means less erosion
6.
Rock samples brought back from the moon show absolutely no evidence of weathering. This is MOST LIKELY due to ______________________________.  
a)
the lack of atmosphere on the moon
b)
extremely low surface temperatures on the moon
c)
lack of biological activity on the moon
d)
lack of running water on the surface of the moon
7.
What force causes all types of mass movement?
a)
convection
b)
temperature
c)
gravity
d)
compaction
8.
What is plowing in curved rows that follow the shape of the land?
a)
contour plowing
b)
soil
c)
subsoil
d)
terrace farming
9.
If wind, water, or ice move sediment from one place to another, it is called...
a)
erosion.
b)
weathering.
c)
a sinkhole.
10.

What is a major cause of soil erosion?

a)

Running Water

b)

Overgrazing

c)

Agricultural Activities

11.

What is soil erosion?

a)

A naturally occurring process that affects all land forms

b)

Type of soil

c)

A time period

d)

The wearing away of top soil

12.

What is soil?

a)

It is the loose material in which plants can grow in the upper layer of Earth.

b)

It is the leaf that grows on the plant.

c)

It is the food that can be found inside the seed.

13.

True or False: Soil takes very little time to form.

a)

True

b)

False

14.

Why would people go through the trouble to terrace (cut steps) on steep hillsides or mountainsides?

a)

to slow down rain erosion

b)

to make it easier to cut grass

c)

it looks prettier

15.

A city crew cleans the storm drains as a storm is approaching. Why is this management important? Storm drains...

a)

are a wall that keeps the wind from blowing soil away.

b)

allow water to quickly move underground causing less erosion.

c)

keep ocean waves from carrying sand away from the beach.

16.

A tropical storm is approaching the coast. What methods do they use to protect them from rising waters from the storm?

a)

dams

b)

seawalls

c)

sand dunes

d)

windbreaks

17.

The Grand Canyon is an example of erosion and weathering.

a)

True

b)

False

18.

What happens during soil erosion?

a)

The land becomes infertile

b)

The land becomes ready to harvest

19.

As the steepness of a slope increases, the erosion of materials on the slope is expected to:

a)

decrease

b)

increase

c)

remain constant.