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Erosion and Deposition

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Name
Class
7
CHAPTER
SECTION
7.2
Date
STUDY GUIDE FOR CONTENT MASTERY
Erosion and Deposition
In your textbook, read about erosion and deposition.
For each item in Column A, write the letter of the matching item in Column B.
Column A
Ff
Column B
1. The final stage of the erosional process in which
a. slope
materials are dropped in another location
e
E
2. The force that tends to pull all materials downhill
a
A
3. The steeper the
b
B
4. Coastal areas undergo erosion by
, the greater the potential
for flowing water to erode earth materials.
b. ocean waves
c. wind
d. glaciers
and wind.
d
D
5. Erode by scraping, gouging, and picking up large
e. gravity
rocks and debris piles
Cc
6. A major erosional agent in areas with limited
f.
deposition
precipitation and high temperatures
Answer the following questions.
7. Give two examples of how plants and animals move Earth’s surface materials from
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
one place to another as they carry on their life processes.
Moles would dig
up the soil in theAnimals
ground and buries
it in another
place.the
Plants,soil
when you
garden
you are picking
the subsoil and moving it
Possible
responses:
burrow
into
and
shovel
it to upanother
and using itHumans
to plant another
plant.
place.
excavate
when building structures or highways. Humans
move soil while planting a garden.
8. Explain rill erosion and how it differs from gully erosion.
Rill
erosion
is erosion
by the
ofis when
a small
channel
on
Rill erosion
is the erosion
by running water
in smallrunning
channels and water
gully erosion
a channel
becomes deep
andthe
wide. side
of a slope. Gully erosion occurs when streams evolve into small channels that
become deeper and wider.
9. Describe the formation of barrier islands.
Forms
the constant
movements of water
shorelines.
Sandwhen
along
a shoreline
canwears
beaway
repeatedly
picked up, moved, and deposited
by ocean currents to form a sandbar. Sandbars may continue to be built up,
thus forming barrier islands.
Study Guide for Content Mastery
Chapter 7 Earth Science: Geology, the Environment, and the Universe
43
Name
Class
CHAPTER
SECTION
7.2
7
Date
STUDY GUIDE FOR CONTENT MASTERY
Erosion and Deposition, continued
The following statements list types of erosion. Using the numbers 1–4, label them by
their ability to transport materials.
4
3
1. wind erosion
2
1
2. water erosion
1
2
3. glacial erosion
4
3
4. plant and animal erosion
For each statement below, write true or false.
True
true
5. When a river enters a large body of water, the water generally slows
down and deposits large amounts of sediments.
True
false
6. The Nile Delta was formed from ocean waves and currents.
False
true
7. The constant movement of water and the availability of accumulated
weathered material creates continuous erosion.
True
false
8. Unlike water, glaciers do not move material over a long distance.
False
true
9. Wind is a major erosional agent in areas on Earth that have both
limited precipitation and high temperatures.
true
10. Wind barriers are trees and other vegetation planted perpendicular
to the wind direction.
False
false
11. The movement of soil and other Earth materials by humans as they
build highways and bridges, is not considered erosion.
False
false
12. Barrier islands, which form from offshore sand deposits, can continue
to be built up from sediments and form sandbars.
True
true
13. The continued erosion of rill channels can develop into gully erosion.
False
false
14. Winds cannot blow against the force of gravity.
False
false
15. Wind can always move more material than water.
True
true
16. A U-shaped valley indicate that glacial erosion has taken place.
True
true
17. Waves, tides, and currents are responsible for erosion of islands.
44
Chapter 7 Earth Science: Geology, the Environment, and the Universe
Study Guide for Content Mastery
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
True