North Carolina Science Grade 8

Chapter 7: Oceans

Section 1 Self-Check Quiz-Eng.

1.
The ocean and life within it provide all of the following EXCEPT __________.
A)transportation of seeds, animals, and materials
B)large amounts of carbon dioxide
C)resources including food, medicines, and salt
D)70 percent of the oxygen on our planet
2.
Ocean water may have come from all of the following EXCEPT __________.
A)lava flows
B)volcanic eruptions
C)torrential rains
D)water vapor
3.
Which of the gases from the atmosphere is not dissolved in seawater?
A)oxygen
B)carbon dioxide
C)argon
D)nitrogen
4.
Which of the following statements is NOT true?
A)Pressure increases as depth increases.
B)Temperature decreases as depth increases.
C)Temperature increases as depth decreases.
D)Pressure decreases as depth increases.
5.
Salinity is a measure of the amount of __________ dissolved in seawater.
A)oxygen
B)solids
C)calcium
D)chloride
6.
Photosynthesis by organisms in the ocean results in the production of __________.
A)water
B)oxygen
C)carbon dioxide
D)nitrogen
7.
The temperature of a __________ quickly decreases as the depth increases.
A)thermocline
B)surface layer
C)syncline
D)deep water layer
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