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EARTH ENERGY: Ocean currents

Total questions: 12

Worksheet time: 8mins

Name
Class
Date
1.

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

2.

What affects the density of water?

a)

Salt

b)

Temperature

c)

The seasons of the year

d)

Both A and B

3.

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

4.
Two types of ocean currents are
a)
local and global
b)
sea and land
c)
surface and deep
d)
warm and cold
5.

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

a)

ocean current

b)

gyre

c)

upwelling

d)

conveyor belt

6.
Surface currents are mainly caused by
a)
The Coriolis Effect
b)
Cold and Warm Water
c)
Convection
d)
Wind
7.
Ocean currents move energy in the form of
a)
Salt
b)
Water
c)
Heat
d)
Oxygen
8.
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
9.

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

10.

What heats the Earth's oceans?

a)

People

b)

Boats

c)

a heater

d)

sun

11.

The more scientific name of the Global Conveyor Belt is _____.

a)

halinethermal circulation

b)

thermohaline circulation

c)

thermodensity circulation

12.
Warm ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Both A and B