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WorksheetsFreshwater Review
Total questions: 25
Worksheet time: 13mins
What is a watershed?
The level below the ground where the ground is saturated
Layers of rock or sediment that allow ground water to pass freely
Land area from which surface run-off drains into a system of rivers and streams
Movement of water from the oceans to the air
Which of the following is created as sediment is continuously deposited along the banks of a river, creating a natural flood barrier?
Levee
Floodplain
Delta
Alluvial Fan
Increased nitrate levels can be due to which of the following?
Fertilizers from agriculture
Manure from livestock
Sewage from human development
All of these answers are correct
The world’s water crisis is due to
Increasing human populations
Over polluted water
Overuse of available water
All of these answers are correct
Changes in the depth of the water table does NOT depend on:
Precipitation
Drought
Over use of wells
Amount of pollutants entering the system
In what areas would we likely see salt water intrusion?
Coastal areas where the water table is extremely high
Coastal areas where groundwater has been overdrawn
Inland areas where the water table is extremely high
Inland areas where groundwater has been overdrawn
The most difficult type of pollution to prevent and/or clean up is
point source pollution
nonpoint source pollution
Which 2 sources of freshwater are used for drinking water?
Oceans and icebergs
Groundwater and oceans
Rivers and groundwater
Icebergs and rivers
What percentage of the water on earth is saltwater?
50
70
92
97
Where is most of our freshwater found?
Groundwater
Icecaps and glaciers
surfacewater
in the atmosphere
Which statement BEST explains the difference between point and nonpoint sources of pollution?
Point sources can’t be traced
Nonpoint sources have a single origin
Point sources have a single origin
Nonpoint sources have multiple origin
What is turbidity a measure of?
Photosynthesis in water.
Cloudiness of water.
amount of salt in water
temperature of the water
What is the most immediate effect of nitrate or fertilizers entering a body of water?
Increased algae growth
a decrease in organisms
Decreased turbidity.
decrease in pH
What is groundwater?
water that fills space between rocks of Earth
water found within a lake or pond
water that is evaporated from the surface of Earth
water that is found in the ocean
Water can exist on Earth as...
solid ice
liquid water
the gas water vapor
all of these answers are correct
Why do we need to conserve water?
It is an unlimited resource.
It is a limited resource.
There is a lot of water.
There is no need to conserve water.
Why is clean water important?
All life on Earth depends on clean water to live and grow
We need clean water for recreational activities.
We need bodies of water for transportation
We need water to regulate the temperature on Earth.
Run-off is the water that -
Soaks into the ground
Always ends up in the oceans
Contains living organisms
Flows over land into a body of water
The top of the water under the ground, most accessible ground water
Ground water
Water table
Aquifer
River system
Structure built across a river to control the river's flow, creates hydroelectric power
Reservoir
River system
Dam
Hydroelectric power
The process by which precipitation that has fallen on land trickles into the ground and becomes groundwater is known as what?
aeration
infiltration
saturation
porosity
What is being shown in the picture?
artesian well
spring
Pollution
well
Which of the following implies the same thing as the word "aquifer"?
zone of saturation
zone of soil moisture
zone of aeration
zone of twilight
A place where the water table intersects the ground surface and where a natural flow of groundwater results is called:
a spring.
a geyser.
an aquifer
a fissure.
a tributary is
the water that is beneath Earth's surface
the path that a stream follows
a stream that flows into a lake or into a larger stream
the boundary between drainage areas that have streams that flow in opposite directions
