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Oceans Review
Test Description: Ocean chemistry, features, waves, currents, tides.
Instructions: Answer all questions to get your test result.
1) ____ 1. A technique that uses sound waves to measure the depth of the ocean floor is
A
weighted lines.
B
sonar
C
SCUBA
D
dredging
2) Which of the following features is made up of a range of mountains that wind through the ocean?
A
abyssal plain
B
mid-ocean ridge
C
seamount
D
trench
3) The part of the ocean that extends from the low-tide line to the edge of the continental shelf is the
A
open-ocean zone.
B
intertidal zone.
C
neritic zone.
D
deep zone.
4) The horizontal distance between wave crests is the
A
wavelength
B
wave height.
C
frequency.
D
trough
5) The size of a wave is NOT affected by the
A
length of time the wind blows across the water.
B
salinity of the water.
C
strength of the wind.
D
distance the wind blows across the water.
6) A rush of water that flows rapidly back to sea through a narrow opening is called a
A
breaker.
B
rip current.
C
tsunami
D
longshore drift.
7) Salinity is a measure of which of the following in water?
A
carbon dioxide
B
sand
C
dissolved salts
D
oxygen
8) What is the most abundant salt in sea water?
A
magnesium chloride
B
calcium chloride
C
potassium chloride
D
sodium chloride
9) Which of the following areas in the ocean is likely to have the lowest salinity?
A
the cold Arctic Ocean
B
a bay at the mouth of a big river
C
deep parts of the Pacific Ocean
D
a warm, tropical sea
10) Which of these gases is about 60 times more plentiful in the ocean than it is in the atmosphere?
A
carbon monoxide
B
helium
C
carbon dioxide
D
oxygen
11) Tides are caused by
A
the interaction of Earth, the moon, and the sun.
B
variations in the salinity of ocean water.
C
the shifting of the plates on the ocean floor.
D
strong winds that blow over ocean waters.
12) A tide with the GREATEST difference between low and high tide is called a
A
neap tide.
B
rip tide.
C
spring tide.
D
monthly tide.
13) In the Northern Hemisphere, currents curve to the right because of the
A
longshore drift.
B
moon’s gravity.
C
density.
D
Coriolis effect.
14) What causes cold, deep currents to form in the oceans near the poles?
A
c. movement of a large mass of warm water across the Pacific
B
a. sinking of dense, cold water with high salinity
C
d. sinking of cold, freshwater from melting icebergs
D
b. the Coriolis force
15) The movement of cold, deep ocean water to replace warm water at the surface is called
A
El Niño.
B
upwelling
C
a surface current.
D
the Coriolis effect.
*select an answer for all questions
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