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Rivers, Lakes, Wetlands And Estuaries Review
Test Description: Review for rivers, lakes, wetlands and estuaries
Instructions: Answer all questions to get your test result.
1) The streams and small rivers that feed into a main river.
A
estuaries
B
water sheds
C
sloughs
D
tributaries
2) Which below is NOT a function of wetlands and estuaries?
A
Produce bacteria
B
Provide a home for wildlife
C
Help control floods by soaking up water
D
Filter and cleans up the water
3) Which of the following not a type of wetland.
A
Marsh
B
Swamp
C
Bog
D
Wasteland
4) A land area that supplies water to a river system is called a
A
flood plain
B
estuary
C
tributary
D
river basin
5) What is the most likely reason that tributaries merge to form the Cape Fear River?
A
slope of the land
B
length of the streams
C
depth of the water
D
speed of the water
6) Why are most lakes freshwater?
A
The rivers that fill most lakes do not contain any salt.
B
Salt sinks to the bottom of most lakes.
C
In most lakes organisms absorb any salt present.
D
Most lakes have an outlet through which salt flows downstream.
7) Which household items perform the most similar to an estuary?
A
pliers
B
sissors
C
broom
D
mop
8) Many cities require a buffer zone around streams. Property owners are prohibited from cutting the grass, removing trees or paving the ground within the buffer zone. What is the most likely purpose of buffer zones?
A
They reduce air pollution created by lawn mowers.
B
They filter the water coming into the stream when it rains.
C
The increase the speed at which water drains away.
D
They discourage people from playing in the channels.
9) Scientists are concerned that there may be fewer ocean fish to feed humans in the future because the estuaries near land are becoming more polluted. Why would the number of fish in the ocean be reduced because the estuaries near land being polluted?
A
Many ocean fish use the estuaries to produce offspring.
B
The pollution in the estuaries eventually makes the ocean toxic.
C
The deep-sea fish come into the estuaries to eat.
D
Estuary fishermen will start fishing in the ocean once the estuaries are polluted.
10) Any area where fresh water from a river meets, and mixes with, salt water from the ocean.
A
river system
B
oxbow lake
C
estuary
D
meander
11) Where would toxic waste eventually end up if a person dumped it into the Haw River above Greensboro?
A
In the soil around Raleigh.
B
The Atlantic Ocean
C
The headwaters of the Little River.
D
The Gulf of Mexico
12) The Cape Fear River and all of it's tributaries is a(n)
A
bio-indicator
B
river system
C
divide
D
estuary
13) Why is lake turnover important?
A
It prevents fish from freezing in the winter.
B
It decreases the pH of the lake.
C
It mixes up the nutrients in the lake.
D
It puts oxygen into the lake during the summer.
14) During the winter, the warmer water on the bottom of a lake is replaced by the colder water on the surface. This is called lake turnover. Why does this occur?
A
Because the warmer water on the bottom is more dense than the colder water at the surface.
B
The fish are located in the warmer waters on the bottom, and as they swim they cause the warmer water to rise to the surface.
C
Because the warmer water on the bottom is less dense than the colder water at the surface.
D
Because there are more nutrients in the colder water at the surface, and it makes the surface water heavier.
15) One watershed is separated from another by a ridge of land called a
A
divide
B
sill
C
slough
D
river system
16) What must be occur for a body of water to be called an estuary?
A
It must only contain fresh water.
B
It must contain fish.
C
It must contain a mixture of fresh and salt water.
D
It must only contain salt water.
17) What term is given to a mixture of fresh and salt water?
A
brackish
B
composition water
C
salinity
D
relish
18) The area of permeable rock or soil that is totally filled, or saturated, with water is called a(n)
A
aquifer
B
loch
C
confining layer
D
breach
*select an answer for all questions
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