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Oceanography

Total questions: 63

Worksheet time: 45mins

Name
Class
Date
1.
Salinity means
a)
how many fish are in the water
b)
how much salt is in the water
2.
The ocean covers 50% of Earth's surface.
a)
True
b)
False
3.

List the layers of the ocean from closest to the surface to furthest from the surface:

a)

deep zone, surface zone, thermocline

b)

thermocline, deep zone, surface zone

c)

surface zone, thermocline, deep zone

d)

surface zone, deep zone, thermocline

4.
The density of ocean water depends on what two factors?
a)
temperature and global winds
b)
temperature and nutrients
c)
salinity and upwelling
d)
salinity and temperature
5.

Which ocean is the largest?

a)

Pacific Ocean

b)

Atlantic Ocean

c)

Indian OCean

d)

Arctic Ocean

e)

Southern Ocean

6.
The ocean floor 
a)
is always a flat bed of sand 
b)
has mountains, plains, and ridges like land surfaces
c)
is covered by the same amount of water everywhere
d)
covers less area than land
7.
Which best describes the continental shelf?
a)
a flat underwater valley 
b)
a region of mountains in the deep ocean 
c)
a shallow area of sediment near the shore 
d)
a region with high water pressure 
8.

Plankton are microscopic single-celled organisms that provide food for many fish, and other sea organisms.

a)

True

b)

False

9.
As you go deeper in the ocean, the _______ decreases. 
a)
water
b)
salinity
c)
temperature
d)
water pressure 
10.
Which of the following is caused by differences in ocean water density?
a)
surface currents
b)
 deep currents
c)
waves
d)
Coriolis effect
11.

What do the arrows represent in the picture?

a)

waves

b)

currents

c)

tides

d)

cycles

12.
The large flat region of the ocean floor is called the 
a)
ocean trench
b)
continental shelf
c)
abyssal plain
d)
seamount 
13.

The Gulf Stream is

a)

a stream behind the school.

b)

a current in the Atlantic Ocean that flows on the eastern coast of North America to England.

c)

a current that flows south in the Atlantic Ocean to the western coast of Africa.

d)

a wind.

14.
What causes surface currents to move in circular paths?
a)
strong winds
b)
the Coriolis effect
c)
salinity
d)
the Global Ocean Conveyor
15.
Upwelling is associated with
a)
a decrease in access to nutrients for phytoplankton
b)
cooler, nutrient-rich waters being pushed up from deeper ocean waters
c)
temperature gradients moving water from the equator to the poles
d)
an increase in human fatalities
16.
Warm ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Both A and B
17.
The effect of Earth’s rotation on the direction of winds and currents is called the _______________ .
a)
La Niña
b)
 El Niño
c)
Coriolis effect
d)
Currents
18.
A measure of the amount of dissolved salts in a given amount of liquids is called: 
a)
salinity
b)
density
c)
deflection
d)
upwelling
19.
A movement of ocean water that follows a regular pattern is called a/an: 
a)
Coriolis Effect
b)
continental deflection
c)
ocean current
d)
global winds
20.
A horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean’s surface is called:
a)
ocean current
b)
deep current
c)
convection current
d)
surface current
21.

Cold ocean currents generally come from

a)

The North Pole

b)

The South Pole

c)

The Equator

d)

Either the North or South Pole

22.
A streamlike movement of ocean water far below the surface is called: 
a)
deep current
b)
surface current
c)
upwelling
d)
density
23.
Any movement of matter that results in differences in density; may be vertical, circular, or cyclical is called: 
a)
surface current
b)
deep current
c)
upwelling
d)
convection current
24.
What three things affect surface currents?
a)
coriolis effect, deep currents, upwelling
b)
upwelling, continental deflections, salinity
c)
coriolis effect, continental deflections, global winds
d)
global winds, the equator, deep currents
25.
How do deep currents form?
a)
Changes in density (salinity and temp.) cause surface water to be less dense and sink
b)
Changes in surface winds cause surface water to be more dense and sink
c)
Changes in density (salinity and temp.) cause surface water to be more dense and sink
d)
Changes in density (salinity and temp.) cause surface water to be more dense and rise
26.
Explain the importance of upwelling to ocean life.
a)
brings nutrients from the deep ocean to the surface
b)
it allows animals to find new homes
c)
causes density changes that circulate temperature
d)
brings nutrients from the surface to the deep ocean
27.
How do particles move as they are cooled?
a)
faster and farther apart
b)
slower and become less dense
c)
slower and closer together
d)
faster and become more dense
28.
How do salinity and temperature affect the density of ocean water?
a)
salinity increase = density increase, temp decrease = density increase
b)
salinity decrease = density increase, temp. decrease = density decrease
c)
salinity increase = density increase, temp increase = density increase
d)
salinity decrease = density increase, temp increase = density increase 
29.
Upwelling is most likely to occur in what area?
a)
in a deep sea trench
b)
in a shallow gulf
c)
along a coastline
d)
in open ocean
30.
What first accurately mapped the ocean floor?
a)
The Spanish armada
b)
Chinese army
c)
Magellan
d)
sonar
31.
The Coriolis Effect is caused by
a)
Earth rotating around the sun
b)
Earth rotating on its axis
c)
The tides
d)
Gravity
32.
Two types of water currents are
a)
local and global
b)
sea and land
c)
surface and deep
d)
warm and cold
33.
As you go deeper in the ocean, the water is colder and less salty.
a)
True
b)
False
34.

Which ocean is the smallest?

a)

Pacific Ocean

b)

Atlantic Ocean

c)

Indian OCean

d)

Arctic Ocean

e)

Southern Ocean

35.

In this layer of the ocean the water temperature drops with increased depth faster than it does in other layers

a)

surface zone

b)

thermocline

c)

deep zone

36.
The highest salinity would be found in which of the following areas?
a)
an area with high rates of precipitation
b)
an area with high rates of evaporation
c)
an area with plenty of runoff
d)
all of the above
37.
The gently sloping submerged surface extending from the shoreline
a)
Seamounts
b)
Continential Shelf
c)
Continential Rise
d)
Continental Slope
38.
Thermohaline circulation refers to the movement of ocean water in surface currents.
a)
True
b)
False
39.
Due to the Coriolis Effect, water in the northern hemisphere moves
a)
clockwise
b)
counter clockwise
c)
both
d)
neither
40.
Which of the following is not a process that decreases the salinity of seawater?
a)
runoff from land
b)
icebergs melting
c)
precipitation
d)
evaporation
41.
According to the conveyor belt model of ocean circulation, what happens when water reaches the poles?
a)
the salinity increases
b)
the salinity decreases
c)
the density of the water decreases
d)
the temperature of the water increases
42.

The 5 large circular ocean currents are called ____________.

a)

Gyres

b)

Currents

c)

Waves

d)

Patterns

43.

a disturbance caused by energy moving through a system in a cyclical pattern

a)

Wave

b)

Amplitude

c)

Frequency

d)

Speed

44.

high point of a wave

a)

crest

b)

trough

c)

amplitude

d)

wavelength

45.

Low point of a wave

a)

crest

b)

trough

c)

Amplitude

d)

wavelength

46.

How fast the wave is moving through a medium

a)

wave speed

b)

wavelength

c)

amplitude

d)

frequency

47.

Distance between points where the wave begins to repeat itself

a)

trough

b)

amplitude

c)

wavelength

d)

frequency

48.

Which letter corresponds to the wavelength?

a)

A

b)

B

c)

C

d)

D

49.

The distance from one crest to the next crest in a wave is

a)

wavelength

b)

crest

c)

trough

d)

amplitude

50.
What is the speed of a wave that has a wavelength of 2 and a frequency of 2.5?
a)
2.5 m/s
b)
5 m/s
c)
4.5 m/s
d)
6 m/s
51.
Which wave has a greater frequency?
a)
wave B
b)
wave C
52.

What does a wave carry from place to place?

a)

energy

b)

matter

c)

people

53.

Which property of the wave would change if you changed the amount of energy the wave had?

a)

amplitude

b)

frequency

c)

wavelength

d)

wave speed

54.
What can cause a tsunami?
a)
earthquake
b)
underwater volcanoes
c)
landslides
d)
all of these
55.
True or False...meteors can cause tsunamis?
a)
True
b)
False
c)
Maybe
d)
What's a meteor
56.

What is the most common cause for tsunamis?

a)

underwater earthquakes

b)

meteor crashes

c)

underwater volcanoes

d)

land slides in the ocean

57.

Which of the following shows the correct order of events for a tsunami?

a)

Water recedes back into the ocean carrying all the debris, tsunami waves hit, tide retreats as a warning

b)

Tide retreats as a warning, water recedes back into the ocean carrying all the debris, tsunami waves hit

c)

Tide retreats as a warning, tsunami waves hit, water recedes back into the ocean carrying all the debris

d)

I have NO idea

58.

True or False? When you are out in the ocean, you might not even be able to detect a tsunami wave.

a)

True

b)

False

c)

Wait, what?

59.

The top part of a tsunami wave is called the

a)

trough

b)

crest

c)

shoal

d)

tidal wave

60.
What is a medium?
a)
something between a small and a large?
b)
the substance through which a wave can travel
c)
a pattern of vibration that simulates when a wave is standing still
d)
the distance from any point on a wave to an identical point on the next wave
61.
 A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
a)
500 m/s
b)
50 m/s
c)
5 m/s
d)
0.5 m/s
62.
The blue-throated hummingbird flaps its wings 300 times a minute.  What is its frequency?
a)
5 hz
b)
300 hz
c)
300/60 
d)
a lot?
63.
1.  Frieda the fly flaps its wings back and forth 121 times each second. The period of the wing flapping is 
a)
0.008 Hz
b)
0.008 s
c)
121 Hz
d)
121 s

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