Ocean Water Answers

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1
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Which ocean borders Africa on the western coast?

A
Arctic Ocean
B
Indian Ocean
C
Pacific Ocean
D
Atlantic Ocean
2
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Which is one feature of the ocean floor found in the open ocean?

A
trench
B
abyssal plain
C
continental slope
D
continental shelf
3

Where does the salt in oceans come from?

A
Glaciers contain salt and melt into the ocean.
B
Pollution from trucks adds salt into the ocean.
C
Minerals from the land are washed into the ocean.
D
Decomposing fish and plants in the ocean increase salinity.
4

Which ocean surrounds Antarctica at the South Pole?

A
Arctic Ocean
B
Indian Ocean
C
Atlantic Ocean
D
Southern Ocean
5

Which underwater ecosystem is made of calcium carbonate structures?

A
tide pools
B
coral reefs
C
kelp forests
D
salt marshes
6

Which factor affects the temperature of ocean water?

A
depth
B
salinity
C
number of organisms
D
amount of dissolved gases
7

Which is one of the ecosystems found in intertidal zones?

A
estuaries
B
trenches
C
coral reefs
D
kelp forests
8

Which percentage of Earth’s oceans is dissolved salts?

A
3.5 percent
B
30.6 percent
C
55 percent
D
96.5 percent
9

Which feature of the ocean floor includes its deepest parts?

A
trench
B
estuary
C
mid-ocean ridge
D
continental slope

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