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7th Grade Chapter 12 Review
Test Description: Agents of Erosion
Instructions: Answer all questions to get your test result.
1) Weathered materials are eroded by the action of _______________.
A
Wind, water, and soda
B
Ice, gravity, and rivers
C
Wind and ice
D
Wind, ice, gravity, and water
2) Rivers are classified as young, mature, and old. What are their qualities?
A
A young river is very active at eroding while an old river is wider and moves slowly.
B
A young river is slow and does less eroding while an old river is fast and erodes a lot.
C
A young river does more transporting of soil. The old river is skinny and moves slowly.
D
A young river is not active at eroding while a mature river is wider.
3) How does a glacier form?
A
A glacier forms by someone putting water in the freezer and it turns to ice.
B
A glacier forms by larger particles moving only a short distance.
C
A glacier forms by unmelted layers of snow build up and turn to ice.
D
A glacier forms by water building up and the water erodes away the land.
4) What is deflation?
A
The process by which wind carries away loose sediment.
B
The process by which gravity carries away loose sediment.
C
The process by which water carries away loose sediment.
D
The process by which ice carries away loose sediment.
5) What is abrasion?
A
The process by which water rubs sediment particles wearing away rock surfaces.
B
The process by which rocks or soil move down hill.
C
The process by which wind rubs sediment particles wearing away rock surfaces.
D
The process by which sediments form at the base of a mountian.
6) What is deposition?
A
The picking up of weathered materials in a new place.
B
The picking up of ice in a new place.
C
The dropping of weathered materials in a new place.
D
The dropping of ice in a new place.
7) What are the four forms of mass movement or when gravity pulls rocks or soil down a slope?
A
Mudflows, landslides, slump, and creep
B
Mudflows, slump, water, and wind
C
Mudflows, creep, water, and popsicles
D
Mudflows, landslides, ice, and wind
8) How does a glacier erode a mountain?
A
Unmelted layers of snow build up and turn to ice.
B
Snow and ice makes rocks break apart which move down the hill uprooting trees.
C
A glacier forms by sorted layers deposit which is called outwash.
D
Ice wedging causes rocks to break apart.The glacier scrapes and scratches the rock.
9) Why is mass movement more common on a steep slope than on a flat field?
A
Mass movement is caused by water.
B
Mass movement is caused by wind erosion. A flat field has more effect on the wind.
C
Mass movement is caused by ice. On a flat field, glaciers have no place to go.
D
Mass movement is caused by gravity. On a flat field, gravity has no place to pull material.
10) An alluvial fan is an example of ___________________ depositon.
A
water
B
gravity
C
ice
D
wind
*select an answer for all questions
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