Chapter 15:
Shaping the Land
Practice Test
1.
How do deltas form?
a.
Precipitation near a stream increases.
b.
A stream starts meandering.
c.
A stream flows into a lake or ocean.
d.
A stream begins to flow faster.
Hint
2.
__________ hold the most freshwater on Earth.
a.
glaciers
b.
lakes
c.
streams
d.
oceans
Hint
3.
How are objects sandblasted?
a.
Boulders are picked up by wind and smashed into the objects.
b.
Ice freezes and thaws in the objects, loosening sand-sized particles.
c.
Windblown particles hit the objects.
d.
Windblown silt is transported great distances and deposited on the objects.
Hint
4.
Which force must be overcome so that gravity can move an object downhill?
a.
friction
b.
erosion
c.
wind
d.
slump
Hint
5.
How do meandering rivers erode their channels into wide, flat valleys?
a.
The slope of meandering riverbeds increases abruptly.
b.
Erosion cuts deeply down into the streambed.
c.
The volume of water in the rivers decreases.
d.
Erosion occurs on outer curves of meanders.
Hint
6.
What must occur in order for a stream to pick up and move rock particles?
a.
The water temperature must decrease.
b.
The streambed must decrease in slope.
c.
The speed of water must increase.
d.
The stream water must evaporate.
Hint
7.
How does terrace farming decrease erosion?
a.
Deep furrows are dug into the ground.
b.
Soil is plowed up and down on steep slopes.
c.
Crop residue is placed on soil.
d.
Flat fields catch runoff from fields above them.
Hint
8.
A rockslide is most likely to occur __________.
a.
in a grassy field
b.
in broad, flat river valleys
c.
in mountainous regions
d.
on glaciers
Hint
9.
How does weathering help speed up erosion?
a.
Frictional forces increase.
b.
Rocks are broken into smaller fragments.
c.
Deposition adds new rock fragments.
d.
The surface are of rocks decreases.
Hint
10.
What causes streams to deposit sediment?
a.
The streams pick up heavy particles.
b.
Their slopes gradually become steeper.
c.
The speed of water in their channels decreases.
d.
Their meanders become more curved.
Hint
