Geologic Maps — Unit test Answers

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1
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Please select the word from the list that best fits the definition

A
tide
B
tidal bore
C
tidal range
D
neap tide
2
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Waves travel when the energy that is transferred into the water from wind moves through the water.

A
T
B
F
3

Coriolis effect, global winds and continental deflections are all factors that control

A
deep currents
B
wind currents
C
surface currents
D
density of currents
4

The change in the wind patterns on the Earth that causes an increase in ocean temperature is:

A
El Niña
B
El Niño
C
La Niña
D
La Niño
5

If the wavelength of a wave stays the same, what happens when the wave period increases?

A
increase in wave speed
B
increase in wave height
C
decrease in wave speed
D
decrease in wave height
6

Surface currents greatly affect the climate in many parts of the world.

A
T
B
F
7

What are the two causes of density in deep current waters?

A
Salinity (how much salt) of the water and high temperatures
B
Salinity (how much salt) of the water and low temperatures
C
Oxygen content of the water and high temperatures .
D
Oxygen content of the water and low temperatures
8

Compared with surface currents, deep currents are

A
colder and less dense.
B
warmer and less dense.
C
warmer and denser.
D
colder and denser.
10

When do the greatest tidal ranges occur?

A
spring tides
B
neap tides
C
high tides
D
low tides
11

Please select the word from the list that best fits the definition

A
depth
B
distance
C
energy
D
speed
E
time
F
volume
12

Why do waves increase in height as they approach the shore?

A
The waves are forced into narrow inlets of land.
B
The water particles speed up as they approach land.
C
The water’s density decreases because it’s warmer near the shore.
D
The waves begin to interact with the ocean floor.
13

It is important for scientists to learn as much as possible about El Niño because the weather pattern

A
has so far been completely unpredictable.
B
affects North America more than any other continent.
C
has so many effects on organisms and land.
D
can only be studied out in the open ocean.
14

The two main parts of a wave are the

A
swell and whitecap.
B
wavelength and wave height.
C
crest and trough.
D
rise and dip.
15

An earthquake causes a tsunami because force from the quake

A
pushes a large body of water up from the ocean floor.
B
pulls water down toward the source of the quake.
C
blows surface water away from the shore.
D
meets the force of currents flowing in a different direction.
16

Buoys that record El Niño can transmit data to satellites in space. What can you conclude from this fact?

A
The buoy and its satellite are launched at the same time.
B
The buoys are spread out along the equator.
C
Scientists work and live on the buoys.
D
The buoys are equipped with computers.
17

Please select the word from the list that best fits the definition

A
California Current
B
cold-water
C
drought
D
El Niño
E
Gulf Stream
F
La Niña
G
buoys
H
Tropics
I
upwelling
J
warm-water
18

What happens due to coral reef damage by El Niño?

A
The ocean water gets warmer.
B
Fish that depend on the reef die.
C
The ocean water gets cooler.
D
The reef supports more diversity of life.
19

Please select the word from the list that best fits the definition

A
depth
B
distance
C
energy
D
speed
E
time
F
volume
20

How do you calculate wave speed?

A
Divide the wave period by the wavelength.
B
Divide the wavelength by the wave period.
C
Divide the wave height by the wave period.
D
Multiply the wavelength by the wave height.

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