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Oceans Review

Total questions: 76

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

What is an Ocean?

a)

small body of water

b)

large body of water

2.

What % of the world is water?

a)

20%

b)

50%

c)

70%

d)

97%

3.

What type of water is in the Ocean?

a)

regular water

b)

salt water

c)

fresh water

d)

spring water

4.

Dark, but some fish live here

a)

Midnight Zone

b)

Twilight Zone

c)

Abyss

d)

Sunlight Zone

5.

VERY Dark, not much life

a)

Midnight Zone

b)

Twilight Zone

c)

Abyss

d)

Sunlight Zone

6.

The movement of deep, cold, nutrient filled water to the surface of the ocean is..

a)

Ocean Current

b)

Upwelling

c)

Deep Currents

d)

Surface Currents

7.

What affects the density of water?

a)

Salt

b)

Temperature

c)

The seasons of the year

d)

Both A and B

8.

What affects the density of water?

a)

Salt

b)

Temperature

c)

The seasons of the year

d)

Both A and B

9.

Why is upwelling important?

a)

Upwelling regulates ocean temperature

b)

Upwelling provides nutrient rich water that sustains life

c)

Upwelling controls the tides

d)

Upwelling helps sailors to navigate the seas

10.
Two types of ocean currents are
a)
local and global
b)
sea and land
c)
surface and deep
d)
warm and cold
11.

What are a circular system of currents in the Earth's major oceans?

a)

ocean current

b)

gyre

c)

upwelling

d)

conveyor belt

12.

Ocean currents affect climates around the world. Based on the map, which area MOST likely has a warmer climate than expected?

a)

1

b)

2

c)

3

d)

4

13.
Currents that occur at or near the surface of the ocean are called 
a)
Deep Currents
b)
Convection Currents
c)
Surface Currents
d)
Wave Currents
14.
Surface currents are mainly caused by
a)
The Coriolis Effect
b)
Cold and Warm Water
c)
Convection
d)
Wind
15.
Regular movements of water far below the oceans surface are called
a)
Warm Currents
b)
Deep Currents
c)
Shallow Currents
d)
Surface Currents
16.
Ocean currents move energy in the form of
a)
Salt
b)
Water
c)
Heat
d)
Oxygen
17.
Ocean currents bring warm water from the equator towards Earth's
a)
Southern Hemisphere
b)
Continents
c)
Equator
d)
Poles
18.
What causes surface currents north and south of the equator to move in different directions? 
a)
Gases in the ocean
b)
The rotation of the Earth
c)
Temperature differences
d)
Continental deflection
19.

Salinity is

a)

The salt content of a substance

b)

The Pepper content of a substance

c)

The circulation of hot and cold matter

d)

the weather pattern of a region

20.

What heats the Earth's oceans?

a)

People

b)

Boats

c)

a heater

d)

sun

21.

What does the blue line represent in the Thermohaline circulation?

a)

Warm salty water

b)

Warm water

c)

Cold water

d)

Cold salty water

22.

Which of the following types of water would SINK the fastest?

a)

warm and salty

b)

cold and salty

c)

warm and fresh

d)

cold and fresh

23.
Warm ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Both A and B
24.

________ and _______ affect the ocean's density and cause the Global Conveyor Belt to travel

a)

gravity and the Coriolis Effect

b)

temperature and salinity

c)

wind and climate

d)

temperature and the Coriolis Effect

25.
Movements of ocean water in a continuous flow are called?
a)
ocean currents
b)
global winds
c)
air mass
d)
front
26.

The Gulf Stream is an example of a  _______________

a)

upwelling

b)

surface current

27.

True or False: Surface currents affect coastal climates.

a)

True

b)

False

28.

The salt content of a substance

a)

density

b)

temperature

c)

convection

d)

salinity

29.

The circulation of hot and cold fluids (liquids and gases)

a)

convection

b)

radiation

c)

density

d)

temperature

30.

The Earth's oceans are generally warmer near the equator and cooler near the poles. Currents in the water near the surface circulate the water. Some of these currents are shown in the image below. Warm currents are shown in red. Cool currents are shown in blue.


Which of the following best describes what the pictured currents do?

a)

carry warm water away from the poles

b)

carry cool water toward the poles

c)

carry warm water toward the equator

d)

carry warm water away from the equator

31.

Warm air and water both tend to rise while cooler air and water sink. When different parts of the oceans are heated unevenly, this causes the water to

a)

mix together in the water cycle.

b)

move in convection currents.

c)

stay in the same place.

d)

form a tsunami.

32.

Water is cooler near the poles and warmer near the equator. Movement of cooler and warmer water from these regions moderates the global climate.

Which of the following describes the movement of water between the poles and the equator?

a)

ocean currents

b)

gravity

c)

evaporation

d)

tides

33.

A process known as upwelling often occurs along ocean coasts. In this process, warm water at the surface is driven out to sea by blowing winds. As the warm water moves out to sea, what most likely happens to the cold water beneath it?

a)

It condenses into ice.

b)

It sinks closer to the ocean floor.

c)

It rises to the surface to replace the warm water.

d)

It is driven out to sea by the warm water.

34.

A student puts water in a long glass tank to make a model of ocean currents. He heats the left side of the tank and cools the right side. This heating and cooling produces a current of water in the tank.

Which diagram correctly shows the flow of the water?

a)
b)
c)
d)
35.

The currents of the Earth's oceans are caused by

a)

global winds and differences in temperature and salinity.

b)

marine organisms and volcanic eruptions.

c)

waves and earthquakes along tectonic plate boundaries.

d)

disturbances by submarines and large ships.

36.

A student wants to make a model of ocean currents. She divides a long glass tank in half, as shown below. She puts fresh water in one side and salt water in the other side.

Next, the student removes the barrier between the two sides.

Which diagram correctly shows the flow of the water when the barrier is removed?

a)
b)
c)
d)
37.

Which is true?

a)

The ocean has no effect on the temperature on the land.

b)

All ocean water is the same temperature.

c)

Ocean water does not move between locations.

d)

Ocean currents affect temperatures on land.

38.

Water in ocean currents can descend when it becomes colder and saltier than the surrounding water. If water descends to the bottom of the ocean, then other water must rise to the top. What causes water to rise to the top of the ocean?

a)

It becomes less dense than the surrounding water.

b)

It is forced upward by underwater mountain ranges.

c)

It is brought upward by organisms that live in the ocean.

d)

It cools down and dissolves additional salt.

39.

The ocean's currents are driven by differences in temperature and density. Different masses of water are warmer and less dense than other masses. This water tends to move along the ocean's surface in surface currents. Colder masses and more dense masses of water tend to sink and move along the ocean floor in deep-water currents.


As shown in the diagram, at several locations warm, less dense water cools, becomes more dense and falls to the ocean floor. At other locations, cold, dense water warms, becomes less dense and rises back to the surface.

This cycling of ocean water along currents is an example of _______.

a)

conduction

b)

absorption

c)

convection

d)

radiation

40.

The image below shows a system of ocean currents that are sometimes referred to as the global ocean conveyor belt.

These currents are a form of convection in the ocean. What is one effect of this convection?

a)

Warm water on the ocean's surface stays on the surface.

b)

The ocean constantly becomes colder as warm water is cooled.

c)

Water from the ocean cools the atmosphere.

d)

Water continually circulates throughout Earth's oceans.

41.

The image shows part of an ocean current in the Atlantic Ocean. The blue line represents the motion of deep, cool water. The red line represents the motion of warm surface water.


One factor that affects ocean currents is the concentration of salt in the water. How can the saltiness of the water cause the surface water to sink, as shown above?

a)

When ice melts, it makes the surface water more salty.

b)

When cold water rises to the surface, it loses salt.

c)

When some of the surface water freezes, the remaining water becomes saltier.

d)

When the surface water is heated by the Sun, it dissolves more salt.

42.

The image shows part of an ocean current in the Pacific Ocean. The blue line represents the motion of deep, cool water. The red line represents the motion of warm surface water.

What most likely causes the current to behave as shown in the image?

a)

When the water is heated, it becomes less dense and rises.

b)

When the surface water is heated by the Sun, it becomes denser.

c)

When the deep water is cooled, it loses energy and becomes denser.

d)

When the cold water evaporates, less dense water rises to take its place.

43.

Cold water near the ocean floor often flows in deep-water currents. The cold water flows toward the deepest regions of the ocean because

a)

the water above it contains less algae.

b)

it is more dense than the warm water above it.

c)

it is warmer than the cold water above it.

d)

the water above it is frozen in icebergs.

44.

The ocean contains currents as a result of uneven heating and uneven salt concentration. These currents exist both on the ocean surface and deep in the ocean.

Which diagram best represents the currents in the ocean?

a)
b)
c)
d)
45.

Currents caused by differences in water density are most often the result of

a)

differences in salinity and wind.

b)

uniform temperature and salinity.

c)

uniform salinity and wind.

d)

differences in temperature and salinity.

46.

Where would I find the most dense ocean water?

a)

At the surface

b)

In the middle

c)

At the bottom

d)

Lake Michigan

47.

What part of the wave is B?

a)

Amplitude

b)

Wavelength

c)

Trough

d)

Crest

48.

What part of the wave is C?

a)

Amplitude

b)

Crest

c)

Wavelength

d)

Trough

49.

What part of the wave is A?

a)

Crest

b)

Trough

c)

Wavelength

d)

Amplitude

50.

What part of the wave is D?

a)

Trough

b)

Crest

c)

Wavelength

d)

Amplitude

51.

____________ are the daily rise and fall of Earth's waters on its coastlines caused by the gravitational interaction of Earth, the Moon, and the Sun.

a)

Tides

b)

Hot spots

c)

Currents

d)

Densities

52.

_________________ is the largest tidal range and occurs when the Earth, the Moon, and the Sun form a straight line.

a)

Spring Tide

b)

Neap Tide

53.

_________________ is the lowest tidal range and occurs when Earth, and the Moon, and the Sun form a right angle.

a)

Spring Tide

b)

Neap Tide

54.

_______________ is the number of waves that pass a point in a certain amount of time.

a)

Frequency

b)

Amplitude

c)

Crest

d)

Wave

55.

______________ is the highest point of a wave.

a)

Crest

b)

Trough

c)

Amplitude

56.

______________ is the lowest point of a wave.

a)

Trough

b)

Crest

c)

Wavelength

57.
The Coriolis Effect is caused by
a)
Earth rotating around the sun
b)
Earth rotating on its axis
c)
The tides
d)
Magic water fairies
58.
A _____________ tide occurs when the moon, sun, and Earth are aligned.  This is a period of the highest high tides and lowest low tides.
a)
neap
b)
spring
c)
slack water
d)
ebb
59.
_______________ are caused by earthquakes on the ocean floor, volcanic eruptions, or underwater landslides.
a)
tides
b)
waves
c)
tsunamis
d)
surface currents
60.
Tides are caused by __________.
a)
wind
b)
density differences
c)
gravity
d)
salinity differences
61.
Water does not move, _____________ moves.
a)
Water
b)
Energy
c)
Waves
d)
Fish
62.
What is a tide of minimum range that occurs during the 1st and 3rd quarters of the moon?
a)
Tide
b)
Tidal range
c)
Spring tide
d)
Neap tide
63.
What is the primary source of energy that generates most ocean waves?
a)
earthquakes
b)
wind
c)
asteriods falling in the ocean
d)
volcanic eruptions
64.

What letter symbolizes a continental slope

a)

A

b)

E

c)

F

d)

H

65.

What letter symbolizes a continental shelf?

a)

A

b)

C

c)

G

d)

F

66.

What letter symbolizes a mid-ocean ridge?

a)

H

b)

G

c)

E

d)

B

67.

What letter symbolizes an abyssal plain?

a)

H

b)

A

c)

C

d)

F

68.

What letter symbolizes a trench?

a)

G

b)

D

c)

A

d)

H

69.

What zone of the ocean is the warmest?

a)

surface zone

b)

deep zone

c)

thermocline

d)

littoral zone

70.
How much of the Earth is covered in water?
a)
70-71%
b)
97%
c)
3%
d)
2%
71.
What is density?
a)
the amount of salt dissolved in a liquid
b)
the amount of matter in a specific volume
c)
how hot or cold something is
d)
a large piece of frozen freshwater
72.

Which ocean is the largest?

a)

Pacific

b)

Atlantic

c)

Indian

d)

Arctic

73.

Oceans are divided into ___________ based on physical characteristics.

a)

layers

b)

zones

c)

groups

d)

areas

74.

This zone is an area of shallow seawater that receives the most sunlight.

a)

Middle Zone

b)

Deep Zone

c)

Surface Zone

d)

Abyss

75.

This zone receives very little sunlight and of it, only the blue-green wavelengths.

a)

Middle Zone

b)

Deep Zone

c)

Surface Zone

d)

Top Zone

76.

A process where organisms produce light using chemicals.

a)

Bioluminescence

b)

Photosynthesis

c)

Metamorphosis

d)

Biogenetics