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Oceans
Test Description: 8.E.1.2
Instructions: Answer all questions to get your test result.
1) What is an ocean basin?
A
A continuous body of water that covers up to 70% of Earths surface.
B
A part of the Earths surface covered by ocean water.
C
A deep trench along the floor of the ocean.
D
The layer of the ocean closest to the surface.
2) How is the deep ocean floor different from the shallow parts of the ocean floor near land?
A
The deep ocean floor is flatter than the parts of the ocean floor near land.
B
The deep ocean floor is steeper that the parts of the ocean floor near land.
C
All of these
D
The deep ocean floor receives more light than shallower parts of the ocean.
3) What is the source of most of the salt in the ocean?
A
Fish
B
Human activities.
C
Rocks on land
D
Wind
4) Which of these is NOT a threat to living ocean resources?
A
Evaporation
B
Pollution
C
Overfishing
D
Oil Spils
5) Which are the main producers in the ocean?
A
Algae and other microscopic organisms.
B
Seaweed growing on the ocean floor.
C
Sea grasses growing on the ocean floor.
D
Microorganisms living near vents in the ocean floor.
6) Which region of the sea is affected by changes in the tides?
A
Deep ocean
B
Shore
C
Open ocean and shore.
D
Open ocean
7) Producers in the upper part of the ocean get nutrients from
A
Materials brought to the surface by upwellings.
B
Dead organisms floating in the water
C
River water that washes out to the ocean.
D
Their roots, which grow in the ocean floor.
8) How are estuaries different from lakes or the ocean?
A
Estuaries contain only freshwater
B
Estuaries contain only salt water.
C
Estuaries contain both saltwater and freshwater.
D
Estuaries are not bodies of water.
9) Which of the following is the main reason why the ocean is salty?
A
Salts dissolve from trash dumped into the ocean.
B
Surface water carries salt from land into the ocean.
C
Salts are spilled by ships that sail through the ocean.
D
Salts naturally form from water molecules in the ocean.
10) All of the following determine specific ocean zones except:
A
Temperature
B
Pressure
C
Sunlight
D
Currents
*select an answer for all questions
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