Oceans Review Question Preview (ID: 35675)


Ocean Chemistry, Features, Waves, Currents, Tides.

____ 1. A technique that uses sound waves to measure the depth of the ocean floor is
a) dredging
b) sonar
c) SCUBA
d) weighted lines.

Which of the following features is made up of a range of mountains that wind through the ocean?
a) seamount
b) mid-ocean ridge
c) trench
d) abyssal plain

The part of the ocean that extends from the low-tide line to the edge of the continental shelf is the
a) neritic zone.
b) open-ocean zone.
c) intertidal zone.
d) deep zone.

The horizontal distance between wave crests is the
a) frequency.
b) wavelength
c) trough
d) wave height.

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.

A rush of water that flows rapidly back to sea through a narrow opening is called a
a) longshore drift.
b) breaker.
c) tsunami
d) rip current.

Salinity is a measure of which of the following in water?
a) carbon dioxide
b) oxygen
c) dissolved salts
d) sand

What is the most abundant salt in sea water?
a) sodium chloride
b) magnesium chloride
c) calcium chloride
d) potassium chloride

Which of the following areas in the ocean is likely to have the lowest salinity?
a) a warm, tropical sea
b) the cold Arctic Ocean
c) a bay at the mouth of a big river
d) deep parts of the Pacific Ocean

Which of these gases is about 60 times more plentiful in the ocean than it is in the atmosphere?
a) oxygen
b) helium
c) carbon monoxide
d) carbon dioxide

Tides are caused by
a) strong winds that blow over ocean waters.
b) the interaction of Earth, the moon, and the sun.
c) the shifting of the plates on the ocean floor.
d) variations in the salinity of ocean water.

A tide with the GREATEST difference between low and high tide is called a
a) spring tide.
b) neap tide.
c) rip tide.
d) monthly tide.

In the Northern Hemisphere, currents curve to the right because of the
a) longshore drift.
b) density.
c) Coriolis effect.
d) moon’s gravity.

What causes cold, deep currents to form in the oceans near the poles?
a) a. sinking of dense, cold water with high salinity
b) b. the Coriolis force
c) c. movement of a large mass of warm water across the Pacific
d) d. sinking of cold, freshwater from melting icebergs

The movement of cold, deep ocean water to replace warm water at the surface is called
a) upwelling
b) a surface current.
c) the Coriolis effect.
d) El Niño.

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