Florida Science Grade 6

Chapter 12: Water Erosion and Deposition

Water Erosion and Deposition

1.
Is there more water on Earth in groundwater systems or river systems?
A)sometimes groundwater systems, other times river systems
B)They are the same.
C)river systems
D)groundwater systems
2.
If too much groundwater is pumped out of the water table ___________.
A)the zone of saturation will disappear
B)the permeable materials could become impermeable
C)the land could sink
D)it will cause the land level to rise
3.
The wearing away of soil and rock is called __________.
A)infiltration
B)erosion
C)runoff
D)drainage
4.
What is the largest drainage basin in the United States?
A)the Mississippi River
B)the Snake River
C)the Missouri River
D)the Colorado River
5.
Catastrophic flooding leaves a ___________ mark on Earth.
A)permanent
B)cursory
C)unnoticeable
D)temporary
6.
How does a stream channel become deeper and wider?
A)The force of the water forces the edges outward.
B)Gravity pulls the stream channel downward.
C)Sediment is removed by the running water.
D)Sediment is moved out by humans.
7.
Runoff is water that __________.
A)we drink
B)creates groundwater
C)doesn't soak into the ground or evaporate
D)soaks into the ground
8.
An example of an impermeable material is __________.
A)granite
B)slate
C)aquifer
D)sandstone
9.
The water table is found in the upper surface of __________.
A)the zone of saturation
B)impermeable rock
C)the zone of permeability
D)pores
10.
Springs are formed when the water table is ___________.
A)empty
B)saturated
C)deep within Earth
D)close to Earth's surface
11.
What defines a stream as a young stream?
A)the size of the stream
B)It flows quickly through a steep valley.
C)the location of the stream
D)The period of time the stream has been there.
12.
Streams are parts of _________ systems.
A)lake
B)rill
C)river
D)ocean
13.
Broad, c-shaped curves in streams are called __________.
A)water tables
B)geysers
C)meanders
D)levees
14.
Barrier islands lay parallel to the shore and ___________.
A)may last several centuries or longer
B)are short term coastal features
C)are unaffected by severe weather
D)are found below sea level
15.
What is the difference between rill and gully erosion?
A)Gully erosion creates much larger channels than rill erosion.
B)Gully erosion creates much smaller channels than rill erosion.
C)Rill erosion creates much larger channels than gully erosion.
D)Gully erosion takes much longer than rill erosion.
16.
Artesian wells use __________ to bring water to the surface.
A)gravity
B)pressure
C)a pump
D)buckets
17.
Vegetation affects runoff by _________ water.
A)slowing down
B)speeding up
C)cleaning
D)soaking up
18.
__________ are built to attempt to prevent flooding.
A)Meanders and geysers
B)Rivers and streams
C)Channels and drainage basins
D)Dams and levees
19.
What part does erosion play in the development of mature streams?
A)It creates channels.
B)It pulls sediments from the riverbed.
C)It smoothes the bottom of the riverbed.
D)It wears down the rocks that cause waterfalls in young streams.
20.
A delta is created when __________.
A)sediments are deposited as water empties into a river
B)a rill or gully empties into a stream
C)sediments are deposited as water empties into an ocean
D)river water empties from a mountain valley onto an open plain
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