Erosional Forces
Practice Test
1.
How do roots stop erosion?
a.
They loosen soil.
b.
They hold sediment into place.
c.
They block wind from the soil.
d.
They lift up sediment.
Hint
2.
What is the main difference between a creep and a slump?
a.
the distance over which the material is moved
b.
the type of material that is moved
c.
the speed at which the movement occurs
d.
the direction along a slope that the movement occurs
Hint
3.
What effect does vegetation have on erosion?
a.
It speeds erosion up.
b.
It resists erosion.
c.
It increases the possibility of mass movement.
d.
It has no effect whatsoever.
Hint
4.
What type of valleys are made by valley glaciers?
a.
flat
b.
streambed
c.
U-shaped
d.
V-shaped
Hint
5.
Which is not a glacial deposit?
a.
moraine
b.
esker
c.
outwash
d.
delta
Hint
6.
How does wind abrasion work?
a.
Sediment falls off of a surface on its own.
b.
Sediment is blown off a surface from wind.
c.
Wind-blown sediment strikes a surface.
d.
Wind blows large chunks of rock off a surface.
Hint
7.
When did the last ice age end?
a.
about 18,000 years ago
b.
4.6 billion years ago
c.
about 180,000 years ago
d.
about 1,800
Hint
8.
Which of these states has a lot of glacial erosion?
a.
Hawaii
b.
Ohio
c.
California
d.
Florida
Hint
9.
What type of glacier is Antarctica covered with?
a.
flat
b.
valley
c.
smooth
d.
continental
Hint
10.
Where do rockfalls and rock slides commonly occur?
a.
on the prairie
b.
in the desert
c.
areas with steep cliffs
d.
near a streambed
Hint
11.
What is erosion?
a.
a process that wears away surface material
b.
a process of mountain building
c.
ocean currents near the surface
d.
wind currents in the upper atmosphere
Hint
12.
What is a danger that is involved with building a house on the side of a hill?
a.
wind
b.
glaciers
c.
mass movement
d.
deposition
Hint
13.
What is plucking?
a.
when rocks, gravel, and sand are moved by a glacier
b.
when wind erosion moves large objects
c.
when water in a stream causes rocks to move downhill
d.
when a glacier pulls a tree from its roots
Hint
14.
What causes dunes to form?
a.
deposits from streams
b.
wind
c.
mountain building
d.
glacial deposits
Hint
15.
Which sediment has the smallest grain?
a.
gravel
b.
dust
c.
loess
d.
sand
Hint
16.
Which force causes erosion to occur?
a.
magnetic
b.
electrical
c.
nuclear
d.
gravity
Hint
17.
In an outwash deposit, which types of sediment drops first?
a.
All are dropped at the same time.
b.
medium-sized
c.
largest
d.
smallest
Hint
18.
All glaciers __________.
a.
melted at the end of the last ice age
b.
are found near the north pole
c.
move under their own weight
d.
move quickly
Hint
19.
How is wind different from other erosional forces?
a.
Wind only moves sediment over small areas.
b.
Wind does not shape the land.
c.
Wind is not strong.
d.
Wind doesn't move heavy objects.
Hint
20.
Sand on a streambed is an example of __________.
a.
weathering
b.
slumping
c.
deposition
d.
rock formation
Hint
