Georgia Science Grade 6

Chapter 19: Oceanography

CRCT Practice

1
At which location was the largest spill?
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A)Brittany, France
B)South Africa
C)Persian Gulf
D)Land's End, England
2
Approximately how many more liters were spilled in the Persian Gulf than in the Bay of Campeche, Mexico?
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A)530 million liters
B)470 million liters
C)379 million liters
D)279 million liters
3
Why is oil entering the ocean a concern?
A)The presence of oil can reduce water quality.
B)The presence of oil in the water is not harmful to marine life.
C)Large spills can be easy to clean up.
D)The presence of oil can improve water quality.
4
Which is a producer?
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A)the Sun
B)kelp
C)sea urchin
D)sea star
5
Producers undergo which process in order to make food?
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A)bioluminescence
B)respiration
C)reproduction
D)photosynthesis
6
Some bacteria undergo chemosynthesis. Chemosynthesis is
A)a process that involves using sulfur or nitrogen compounds as an energy source to produce food.
B)a process by which other organisms are consumed as a source of energy.
C)a process by which reproductive cells are released into the water.
D)a process that involves using light from the Sun as an energy source to produce food.
7
What changes have occurred in regard to harmful algal blooms since 1970?
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A)they have decreased
B)they have increased
C)there has been no change
D)it is unknown
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