Ocean Motion
Practice Test
1.
Currents south of the equator are turned counterclockwise because of __________.
a.
the Coriolis effect
b.
the warm equator
c.
the cold polar regions
d.
cold water rising
Hint
2.
The highest point of a wave is called the __________.
a.
breaker
b.
peak
c.
trough
d.
crest
Hint
3.
The height of waves depends on all of the following EXCEPT __________.
a.
the length of time the wind blows
b.
the speed of the wind
c.
the temperature of the water
d.
the distance over which the wind blows
Hint
4.
Tides are most noticeable __________.
a.
near the equator
b.
during spring tides
c.
in small bodies of water
d.
in shallow bodies of water
Hint
5.
Low areas on Earth that filled with water to form oceans are called __________.
a.
valleys
b.
salinity
c.
lowlands
d.
basins
Hint
6.
Which gas that is found in ocean water does NOT come from the atmosphere?
a.
oxygen
b.
carbon dioxide
c.
chlorine
d.
nitrogen
Hint
7.
Ocean circulation resulting from wind blowing along the coast is called a(n) __________.
a.
density current
b.
coastal current
c.
upwelling
d.
surface current
Hint
8.
Which of the following is NOT true regarding a wave passing through an area away from shore?
a.
Floating objects and water particles move forward.
b.
The water particles remain in the same place.
c.
The energy of the wave continues to move forward.
d.
Floating objects rise and fall with the wave but do not move forward.
Hint
9.
Which of the following does NOT have an effect on the density of seawater?
a.
motion of water
b.
evaporation of water
c.
heating of water
d.
freezing of water
Hint
10.
Energy is carried through matter or space by a rhythmic movement called a __________.
a.
wave
b.
breaker
c.
tide
d.
crest
Hint
11.
Ocean water might have come from all of the following EXCEPT _________.
a.
land basins
b.
water vapor
c.
volcanic eruptions
d.
torrential rains
Hint
12.
Salinity measures the amount of __________ dissolved in seawater.
a.
sodium
b.
salt
c.
oxygen
d.
hydrogen
Hint
13.
A __________ is a collapsing wave.
a.
trough
b.
tide
c.
breaker
d.
crest
Hint
14.
When seawater freezes, which type of current is produced?
a.
surface
b.
density
c.
upwelling
d.
coastal
Hint
15.
Dissolved salts and gases can enter seawater by all of the following EXCEPT __________.
a.
organism respiration
b.
ions from dissolved rocks
c.
ions from erupting volcanoes
d.
desalination
Hint
16.
Warm surface currents affect the water temperature along the __________ coast of continents.
a.
west
b.
east
c.
south
d.
north
Hint
17.
Cold water rises to the surface in __________.
a.
upwellings
b.
density currents
c.
temperature currents
d.
depth currents
Hint
18.
The Coriolis effect is caused by __________.
a.
salinity changes
b.
Earth's rotation
c.
density changes
d.
temperature changes
Hint
19.
When salt water changes in density, a(n) __________ occurs.
a.
surface current
b.
upwelling
c.
Coriolis effect
d.
density current
Hint
20.
Density currents cannot form by a(n) __________.
a.
sinking of cold water
b.
decrease in temperature
c.
windstorm
d.
increase in salinity
Hint
