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Ocean and seas

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.

Oceans cover about ______ of the surface of the earth.

a)

60%

b)

70%

c)

80%

d)

90%

2.

There are _____ oceans in the world

a)

4

b)

6

c)

5

d)

9

3.

The following are the oceans according to size

a)

Pacific, Atlantic, Indian, Arctic, Antarctic

b)

Pacific, Indian, Atlantic, Arctic, Antarctic

c)

Atlantic, Pacific, Indian, Antarctic, Arctic

d)

Pacific, Atlantic, Indian, Antarctic, Arctic

4.

The _________ is located in the North Pole.

a)

Antarctic Ocean

b)

Southern Ocean

c)

Arctic Ocean

d)

Indian Ocean

5.

Smaller bodies of salt water are called

a)

seas

b)

lakes

c)

oceans

d)

rivers

6.

The ______________ covers a third of the earth's surface.

a)

Indian Ocean

b)

Pacific Ocean

c)

Atlantic Ocean

d)

Arctic Ocean

7.

The deepest parts of the ocean are called

a)

trenches

b)

abyss

c)

deep sea plain

d)

guyot

8.

Underwater volcanoes with flat tops are known as

a)

shelf

b)

abyss

c)

guyots

d)

slope

9.

Seas, bays, channels and gulfs are other bodies of _____

a)

salt water

b)

fresh water

c)

swampy water

d)

loamy water

10.

Winds blowing across the surface of the oceans and seas cause them to move in ripples called ________

a)

tides

b)

waves

c)

current

d)

motion

11.

What affects the density of water?

a)

Salt

b)

Temperature

c)

The seasons of the year

d)

Both A and B

12.
Two types of ocean currents are
a)
local and global
b)
sea and land
c)
surface and deep
d)
warm and cold
13.

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

a)

ocean current

b)

gyre

c)

upwelling

d)

conveyor belt

14.

The Gulf Stream carries warm water to the North Atlantic Ocean, which contributes to

a)

a mild climate for the British Isles.

b)

a harsh winter in the British Isles.

c)

a cold-water surface current that flows to the British Isles.

d)

a warm-water surface current that flows along the coast of California.

15.
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
16.
Surface currents are mainly caused by
a)
The Coriolis Effect
b)
Cold and Warm Water
c)
Convection
d)
Wind
17.
Regular movements of water far below the oceans surface are called
a)
Warm Currents
b)
Deep Currents
c)
Shallow Currents
d)
Surface Currents
18.
Ocean currents move energy in the form of
a)
Salt
b)
Water
c)
Heat
d)
Oxygen
19.
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
20.

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