Earth Science- Weathering And Erosion Quiz

47 Questions  I  By Falvs17
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1.  Wearing down of particles.
A.
B.
C.
2.  Most important factor affecting soil is
A.
B.
C.
3.  What are the four agents of erosion?
A.
B.
C.
D.
4.  Thin sheets of soil removed prevent by--grass, continued plowing, crop rotation, strip crop, terraces.
A.
B.
C.
5.  Zone of soil are called
A.
B.
C.
6.  Running what is the most effective agent of erosion.
A.
B.
7.  Rock fragments and slighty weathered bedrock..you keep diging here, you'll eventually hit soil rock.
A.
B.
C.
8.  What are five examples of mass movements?
A.
B.
C.
D.
9.  Planting crops in alternating bands, one of which is a cover crop that slows rain runoff.
A.
B.
C.
D.
10.  Occuring as a result of heavy rainfall, spring thaws, volcanic eruptions, or earthquakes, the sudden fall down a steep slope of masses of loose rock combined with soil is called a
A.
B.
C.
D.
11.  Found in western half of U.S. where rainfall is less than 25 inches a year, basic soil.
A.
B.
C.
12.  Planting a field with one type of crop one year and a different type of crop the next year.
A.
B.
C.
D.
13.  A smaller plateau that are tablelike areas.
A.
B.
C.
14.  The entire arrangement of horizons are called
A.
B.
C.
15.  Warm and wet, speed up chemical weathering.
A.
B.
C.
16.  The slow, downslope flow of soil saturated with water over hard or frozen layers in areas surrounding glaciers at high elevations is called
A.
B.
C.
D.
17.  This horizon is formed from the leaching of horizon A.
A.
B.
C.
18.  Subsoil, more clay is washed down.
A.
B.
C.
19.  Soil that was moved by wind or glacier.
A.
B.
C.
20.  Building steplike ridges that follow the contours of a sloped field, thus slowing the down slope movement of water.
A.
B.
C.
D.
21.  Soil made from local bedrock.
A.
B.
C.
22.  The breakdown of rock due to exposure to the atmosphere, weather, plants and animals.
A.
B.
C.
D.
E.
23.  Three examples of wind erosion.
A.
B.
C.
24.  Rates of weathering. (mark all that apply)
A.
B.
C.
D.
E.
F.
25.  Removal of loose particles by wind--most important effect by wind.
A.
B.
C.
26.  Found in eastern half of U.S. where amout of rainfall exceeds 25 inches a year, a lot of vegetation and acidic soil.
A.
B.
C.
D.
27.  Rock is split or broken into smaller material without changing its composition.
A.
B.
C.
D.
E.
28.  What is the rapid fall of rocks, ranging in size from tiny fragments to large boulders, from a steep cliff?
A.
B.
C.
D.
29.  What are the factors that determin soil makeup?
A.
B.
C.
30.  A broad, flat landform that has a high elevation. Subject to much more erosion than a plain.
A.
B.
C.
31.  Definition of creep.
A.
B.
C.
D.
32.  What may occur in dry regions guring a sudden, heavy rainfall or as a result of volcanic eruptions, with mud churning and tumbling down slopes and through valleys?
A.
B.
C.
D.
33.  Plowing soil in curved bands that follow the shape of the land, thus preventing soil from flowing directly down slopes.
A.
B.
C.
D.
34.  Small, narrow-topped formations.
A.
B.
C.
35.  Topsoil, gray or black, has humus.
A.
B.
C.
36.  Most important result of weathering is
A.
B.
C.
37.  Examples of chemical weathering. (mark all that apply)
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
38.  An accelerated soil erosion caused by the plowing of furrows up and down slopes that allows water to run swiftly over soil, carrying away the topsoil, is called
A.
B.
C.
39.  Process by which rocks break down as a result of chemical reactions.
A.
B.
C.
40.  How do some farming and ranching practices increase soil erosion?
A.
B.
C.
D.
E.
41.  Examples of mechanical weathering. (mark all that apply)
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
42.  The movement of a large mass of sediment or a section of land down a slope is called
A.
B.
C.
D.
43.  What occrs along very steep slopes when saturation by water and loss of friction with underlying rock cause loose soil to slip downhill in one huge piece?
A.
B.
C.
D.
44.  High elevation and latitude, very few layers, shallow..permafrost.
A.
B.
C.
45.  A relatively flat landform near seal level.
A.
B.
C.
46.  Constant erosion reduces the __________ of the soil by removing the A horizon, which contains humus.
A.
B.
C.
47.  Once the plants die that are on top of the horizon, the nutrients make
A.
B.
C.
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