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Ocean Floor Parts

Total questions: 20

Worksheet time: 17mins

Name
Class
Date
1.
What is an underwater mountain formed by a volcano?
a)
trench
b)
rift zone
c)
seamount
d)
mid ocean ridge
2.
What is the steep slope at the edge of the continental shelf?
a)
seamount
b)
mid-ocean ridge
c)
continental slope
d)
rift zone
3.
What are underwater mountain ranges called?
a)
continental shelf
b)
mid-ocean ridges
c)
abyssal plains
d)
continental slopes
4.
Where is the shallowest part of the ocean floor?
a)
continental slope
b)
continental shelf
c)
abyssal plains
d)
rift zones
5.
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
6.
What is the deepest part of the ocean basin?
a)
abyssal plains
b)
trenches
c)
rift zones
d)
mid-ocean ridge
7.
What is an opening in the surface where lava may flow?
a)
trench
b)
seamount
c)
rift zone
d)
valley
8.

Sonar is the most accurate way used to map

a)

the ocean floor

b)

sea level

c)

the moons of Jupiter

d)

the Grand Canyon

9.
Scientists use ______ to determine the oceans depth.
a)
Submarine
b)
Sonar
c)
Helicopter
d)
Light
10.
The _________ is the gradually sloping end of a continent that extends under the ocean to 350 m deep.
a)
continental shelf
b)
trench
c)
seamount
d)
abbysal plain
11.

What covers 70% of the earth's surface

a)

Ocean

b)

Rivers

c)

Lakes

d)

Ponds

12.

As depth increases..........

a)

Things become shallow

b)

temperature decreases, pressure increases, and light decreases

c)

It is more salty

d)

An Ocean Current

13.

Underwater Volcanoes and Mountains?

a)

Seamounts or Mid- Ocean Ridge

b)

Mountain Ridge

c)

Coastal Plains

d)

Abyssal Plains

14.

Which of these are the deepest parts of the oceans?

a)

Continental Shelf

b)

Abyssal Plain

c)

Ocean Trench

d)

Continental Rise

15.

Plant-like plankton is called...

a)

Photosynthesis

b)

Phytoplankton

c)

Decomposer

d)

Consumer

16.

As the depth of the ocean water increases, the temperature...

a)

increases (warmer)

b)

decreases (colder)

17.

Which would you find covering the ocean floor?

a)

Mud

b)

Ice

c)

Rocks

d)

Sand

18.

Which ocean floor feature is the steep cliff-like drop beyond the continental shelf?

a)

Continental Shelf

b)

Continental Slope

c)

Abyssal Plain

d)

Ocean Trench

19.

As the depth of ocean waters increases, the pressure...

a)

increases (more pressure)

b)

decreases (less pressure)

20.

The distance between two crests or two troughs on a wave is the...

a)

Crest

b)

Trough

c)

Wavelength