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Oceanography!

Total questions: 51

Worksheet time: 26mins

Name
Class
Date
1.
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 
2.
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
3.
The ocean covers 50% of Earth's surface.
a)
True
b)
False
4.
Where is the ocean deepest?
a)
ocean trench
b)
volcanic island
c)
abyssal plain 
d)
mid-ocean ridge
5.
Plankton are microscopic single-celled oragnisms. 
a)
True
b)
False
6.
The main difference between ocean water and lake water is that ocean water contains
a)
oxygen
b)
salt
c)
algae
d)
plants
7.
As you go deeper in the ocean, the _______ decreases. 
a)
water
b)
salinity
c)
temperature
d)
water pressure 
8.
What do the arrows represent in the picture?
a)
waves
b)
currents
c)
tides
9.

What causes the tides to change?

a)

rotation of the Earth

b)

tilt of Earth

c)

gravitational pull from the moon

d)

ocean currents

10.
Upwelling is the process where warm, nutrient rich water from deep in the ocean rises to the surface.
a)
False
b)
True
11.
Upwelling occurs as the _______________ blow warm surface water away from the coast.
a)
Prevailing Westerlies
b)
Equatorial Winds
c)
Trade Winds
d)
Tropical Winds
12.
A result of upwelling is a/an _________ in nutrients in the water.
a)
Decrease
b)
Increase
c)
No Change
13.

What affects the density of water?

a)

Salt

b)

Temperature

c)

The seasons of the year

d)

Both A and B

14.

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

a)

ocean current

b)

gyre

c)

upwelling

d)

conveyor belt

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.
What happens when there is a spring tide
a)
high tides 
b)
really high tides
c)
low tides
18.
Air moves from _______ pressure to _______ pressure.
a)
Low, High
b)
High, Low
c)
Warm, Cold
d)
Cold, Warm
19.
The deflection of currents due to Earth's rotation is called the
a)
Rotation Effect
b)
Current Effect
c)
Coriolis Effect
d)
Deflection Effect
20.
Upwelling provides _________ for many sea organisms.
a)
Water
b)
Nutrients
c)
Air
d)
Heat
21.
The Gulf stream carries _____________ water from the east coast of The United States to the West coast of Europe.
a)
Cold
b)
Warm 
c)
Freezing
d)
Fresh
22.
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
23.
Cold ocean currents generally come from
a)
The North Pole 
b)
The South Pole
c)
The Equator
d)
Both North and South Poles
24.

Tides are caused by __________.

a)

wind

b)

density differences

c)

the Moons gravity

d)

salinity differences

25.
Which letter is pointing to a trench?
a)
A
b)
D
c)
G
d)
B
26.
What is an underwater mountain formed by a volcano?
a)
trench
b)
rift zone
c)
seamount
d)
mid ocean ridge
27.
What is the steep slope at the edge of the continental shelf?
a)
seamount
b)
mid-ocean ridge
c)
continental slope
d)
rift zone
28.
What are underwater mountain ranges called?
a)
continental shelf
b)
mid-ocean ridges
c)
abyssal plains
d)
continental slopes
29.
Where is the shallowest part of the ocean floor?
a)
continental slope
b)
continental shelf
c)
abyssal plains
d)
rift zones
30.
What is the flat land located on either side of the mid-ocean ridge?
a)
continental slope
b)
continental shelf
c)
abyssal plain
d)
ocean basin
31.
What is the only part of the ocean floor without tectonic activity?
a)
continental slope
b)
continental margin
c)
seamount
d)
abyssal plain
32.
Ocean currents are caused by-
a)
underwater earthquakes
b)
human influence
c)
sun moon and Earth interaction
d)
density differences
33.
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
34.
Continental shorelines generally have a milder climate than locations inland at the same latitude due to-
a)
ocean water acting as a conductor of heat
b)
land is a greater storage of heat
c)
ocean water stores and releases heat more slowly than land
d)
land masses release hear slower than land
35.
What sea floor feature is created by erosion and deposition?
a)
continental rise
b)
submarine canyon
c)
Marianas trench
d)
seamount
36.
What part of the ocean floor would be most affected by sea level change?
a)
abyssal plain
b)
continental shelf
c)
continental slope
d)
trench
37.

How much of earth's surface is covered by oceans?

a)

More than 70%

b)

Less than 20%

c)

50% exactly

d)

23% exactly

38.

Earth rotates on its axis which deflects air towards the right in the Northern Hemisphere and left in the Southern Hemisphere. What is this process called?

a)

The Coriolis Effect

b)

The Axis Effect

c)

The Greenhouse Effect

d)

Upwellings

39.

What is the average salinity of the oceans?

a)

0.05 ppt

b)

335 ppt

c)

1000 ppt

d)

0.5 ppt

40.

What happens to the salinity of ocean water as you move towards the poles?

a)

It decreases

b)

It increases

c)

It stays the same

d)

There is not pattern

41.

The movement of nutrients from the oceans floor in a circular motion is called ?

a)

Eutrophication

b)

Condensation

c)

UpWelling

d)

Nutrient development

42.

How does salt affects the density of Ocean water ?

a)

Makes it less dense

b)

Doesn't change its density

c)

Makes it more dense

43.

What drives surface current?

a)

Wind

b)

Density

c)

Temperature of water

d)

Salinity

44.

The Coriolis Effect causes water to move to the right in the _______ hemisphere.

a)

northern

b)

southern

c)

eastern

d)

western

45.

A circular system of currents.

a)

gyre

b)

Coriolis Effect

c)

upwelling

d)

surface current

46.

Wind driven currents are known as ______ currents.

a)

surface

b)

density

c)

wind

d)

prevailing

47.

What would be the effect on the particles in the animation if more heat is supplied to the system?

a)

They would slow down.

b)

They would stop moving completely.

c)

They would speed up.

d)

There would be no effect.

48.
What causes the upwelling of cold water forming the El Nina weather phenomenon? 
a)
Weak Trade winds
b)
Strong Ocean currents
c)
Strong Trade winds
d)
Weak Ocean currents
49.

The rotation of the Earth causes winds to bend due to the...

a)

coriolis effect

b)

doldrums

c)

trade winds

d)

westerlies

50.

what is the main cause of the coriolis effect?

a)

earth’s rotation

b)

trade winds

c)

the sun and ocean

d)

temperature

51.

What is letter C? This is the deep FLAT area of the ocean floor that goes on for miles and miles.

a)
Mid-Ocean Ridge
b)
Cont. Shelf
c)
Cont. Slope
d)
Abyssal Plain