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