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WorksheetsErosion Unit
Total questions: 36
Worksheet time: 18mins
Name
Class
Date
1.
_______ is small pieces of rock that settle at the bottom of a liquid.
a)
Weathering
b)
Erosion
c)
Deposition
d)
Sediment
2.
________ is the breaking down of rock into smaller pieces.
a)
Weathering
b)
Erosion
c)
Deposition
d)
Sediment
3.
_______ is the carrying away of sediment by wind, water, ice, or gravity.
a)
Weathering
b)
Erosion
c)
Deposition
d)
Sediment
4.
_______ is the laying down of sediment in new locations.
a)
Weathering
b)
Erosion
c)
Deposition
d)
Sediment
5.
A canyon such as the Grand Canyon is created by ___________ erosion.
a)
wind
b)
water
c)
glacial (ice)
6.
A "V" shaped valley is formed by ______ erosion.
a)
wind
b)
water
c)
glacial (ice)
7.
A "U" shaped valley is formed by ______ erosion.
a)
wind
b)
water
c)
glacial (ice)
8.
A delta is formed by ______ erosion.
a)
wind
b)
water
c)
glacial (ice)
9.
A sand dune is formed by ______ erosion.
a)
wind
b)
water
c)
glacial (ice)
10.
The earth's crust (surface) is broken into puzzle pieces called ________.
a)
platelets
b)
cores
c)
tectonic plates
11.
When 2 continental (land) plates bump into one another, _______ are formed.
a)
mountains
b)
rifts
c)
trenches
d)
lakes
12.
When 1 continental (land) plate bumps into a thinner ocean plate _______ often form.
a)
mountains
b)
rifts
c)
trenches
d)
volcanoes
13.
When 1 continental (land) plate slides past another continental plate _______ commonly occur.
a)
mountains
b)
rifts
c)
earthquakes
d)
volcanoes
14.
What pattern can be observed about earthquakes and volcanoes using this map?
a)
Earthquakes are in the West and Volcanoes are in the East
b)
Earthquakes are in the East and Volcanoes are in the West
c)
Earthquakes and Volcanoes usually occur in the middle of plates
d)
Earthquakes and volcanoes often occur along plate boundaries
15.
Which of the following represents a SLOW change to Earth's surface?
a)
formation of a delta
b)
eruption of a volcano
c)
an earthquake
d)
a flash flood
16.
Which of the following would represent a FAST change to Earth's surface?
a)
formation of a sand dune
b)
building of a beach
c)
formation of a valley
d)
landslide
17.
What process(es) might result in the peaks of mountains becoming smooth and rounded?
a)
deposition
b)
weathering and erosion
c)
tectonic plates spreading apart
d)
tectonic plates sliding past
18.
Which is an example of physical weathering?
a)
carbon dioxide combining with oxygen to form rust
b)
carbon dioxide combining with water to form acid rain
c)
plant roots growing in rock cracks and breaking rock apart
19.
Which is an example of chemical weathering?
a)
water collecting in rock cracks, freezing, and breaking rock apart
b)
carbon dioxide combining with water to form acid rain
c)
waves crashing against the shore breaking rock into smaller pieces
d)
rain beating down on soil breaking it into sediment
20.
Which is an example of erosion?
a)
heavy rainstorms pounding rock into smaller pieces
b)
water carrying sediment from tributaries to rivers
c)
water laying down rock to form a delta
d)
wind laying down rock to form a sand dune
21.
Which is an example of deposition?
a)
wind picking up and carrying soil
b)
water carrying sediment from tributaries to rivers
c)
water laying down rock to form a delta
d)
a farmer plowing the land
22.
A farmer has dug a pond in his back yard. What action can he take that will prevent the water in the pond from eroding the land around it?
a)
fill the pond with fish
b)
remove all plants from the yard
c)
cover the land with straw
d)
plant grass and other vegetation on the land and around the pond
23.
How can plants protect soil from erosion?
a)
plants absorb excess water
b)
plant roots hold soil in place
c)
plant leaves act like a blanket that shields the land from the forces of wind and water
d)
ALL OF THESE
24.
At which point will weathering mostly occur?
a)
Point A
b)
Point B
c)
Point C
25.
At which point will erosion mostly occur?
a)
Point A
b)
Point B
c)
Point C
26.
At which point will deposition mostly occur?
a)
Point A
b)
Point B
c)
Point C
27.
In which direction do rivers on the Great Plains flow?
a)
toward the Pacific Ocean
b)
toward Canada
c)
toward the Mississippi River
d)
toward the Atlantic Ocean
28.
Scientists estimate that Louisiana is losing _______ of land ___________.
a)
75 square km per year or one football field per hour
b)
25 miles per minute
c)
15 meters per second
d)
one community per day
29.
As a result of the Great Flood of 1927, the government ________ which led to the death of the delta.
a)
raised taxes
b)
built the Port of New Orleans
c)
built levees to control the Mississippi River
d)
planted grass along the coastline
30.
Which are human activities that have led to the death of the delta?
a)
oil and gas companies dredging canals to lay pipelines
b)
building levees
c)
building dams
d)
ALL OF THESE
31.
Which are NATURAL processes that have led to the death of the delta?
a)
Subsidence
b)
Sea-Level Rise
c)
Wind and wave erosion from hurricanes
d)
ALL OF THESE
32.
Subsidence is ___________
a)
elevation of land
b)
sinking of land
c)
movement of land
d)
shrinking of land
33.
The Louisiana coastline is important to the United States because _________.
a)
The LSU Tigers are here
b)
The Port of New Orleans is a trade route for 31 states
c)
New Orleans is a major tourist site
d)
The loss of New Orleans would damage the shrimp industry
34.
Why is it important to build barrier islands off of the coast of Louisiana
a)
because they absorb the impact of the storm surge from hurricanes
b)
they provide new places for people to vacation
c)
they provide new habitats for marine animals
d)
they provide new locations to drill for oil
35.
What does it mean to redirect sediment?
a)
let it fall to the bottom of the Mississippi River
b)
reroute it upstream back to the tributaries
c)
direct the sediment carried by the Mississippi to a new location where it can rebuild land
d)
dig up the sediment and dump it in the ocean off of the coast of Florida
36.
How does salt water harm the Louisiana delta?
a)
It makes the plants grow taller
b)
It kills the plants whose roots hold soil in place
c)
It makes the plants grow thicker
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