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The Ocean Floor

Total questions: 27

Worksheet time: 9mins

Name
Class
Date
1.

The Earth's outermost layer is called the ___.

a)

crust

b)

mantle

c)

outer core

d)

inner core

2.
The ocean makes up about ________ % of the Earth's surface. 
a)
100%
b)
53%
c)
70 %
d)
90%
3.
When you are building a sand castle on the beach, what feature are you standing on? 
a)
abyssal plain
b)
continental shelf
c)
seamount
d)
continental rise
4.
Which of the following describes a trench
a)
it rises above the water
b)
flat, low lying area of the ocean floor
c)
a stretch of underwater mountains
d)
deep cuts in the ocean floor, canyon-like 
5.
What is letter C pointing to? 
a)
abyssal plain
b)
seamount
c)
mid-ocean ridge
d)
continental shelf
6.
The shoreline is where ____________ and __________ meet. 
a)
land and ocean
b)
ocean and lakes
c)
rivers and mountains
d)
continental slope and continental rise
7.
What is the steep slope at the edge of the continental shelf?
a)
seamount
b)
mid-ocean ridge
c)
continental slope
d)
rift zone
8.
What is an underwater mountain formed by a volcano?
a)
trench
b)
rift zone
c)
seamount
d)
mid ocean ridge
9.
What are underwater mountain ranges called?
a)
continental shelf
b)
mid-ocean ridges
c)
abyssal plains
d)
continental slopes
10.
Where is the shallowest part of the ocean floor?
a)
continental slope
b)
continental shelf
c)
abyssal plains
d)
rift zones
11.
Which pair represents wide, flat areas of land? 
a)
Mountains- Mid-Ocean Ridge
b)
Trench- Canyon
c)
Plains- Abyssal Plains
d)
Volcano-Seamount 
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.

Amount of salt found in water

a)

Photic Zone

b)

Gulf Stream

c)

Photosynthesis

d)

Salinity

14.

Warm water surface current located on the coast (Gulf of Mexico)

a)

Gulf Stream

b)

Ecosystem

c)

Organism

d)

Density

15.

Underwater Volcanoes and Mountains?

a)

Seamounts or Mid- Ocean Ridge

b)

Mountain Ridge

c)

Coastal Plains

d)

Abyssal Plains

16.

gently sloping shelf of land extending from the shoreline to the continental edge

a)

Continental Slope

b)

Continental Shelf

c)

Continental Rise

d)

Abyssal Plain

17.

Tiny living creatures that float near the oceans surface and move with currents

a)

Sea horses

b)

Plankton

c)

jelly fish

d)

sharks

18.

the process in which plants use light energy to make food

a)

Pistil

b)

Pollen

c)

Anther

d)

Photosynthesis

19.

the constant movement of ocean water that is caused by the patterns of wind and water density

a)

Ocean Current

b)

Continental Drift

c)

Land Before Time

d)

Zooplankton

20.

The zone in the oceans layers with the warmest temperatures that is warmed by sunlight and most life exist there?

a)

Photic Zone

b)

Depth

c)

Water temperature

d)

Mid- Ocean Ridge

21.
Massive pieces of land that are part of the Earth's crust and upper mantle
a)
Tectonic plates
b)
Trenches
c)
Divergent boundary
d)
Continental shelves
22.
The OLDEST seafloor is located? 
a)
Closest to the mid-ocean ridge
b)
Farthest from the mid-ocean ridge
23.
True or False : Sea-floor Spreading adds new material to the ocean floor?
a)
True
b)
False
24.
What are Mid-Ocean Ridges?
a)
A chain of underwater waterfalls 
b)
A chain of underwater volcanos
c)
A chain of underwater mountains
d)
A chain of underwater rocks
25.
The oceanic crust is pushed aside on both sides of the 
a)
Continent's edge
b)
Deep-ocean trench
c)
Mid-ocean ridge
26.

In Seafloor Spreading, molten material rises from the mantle and erupts or flows out

a)

along the edges of all the continents

b)

in the deep ocean trenches

c)

along mid-ocean ridges

d)

in the north and south poles

27.
A guyot has a flat top due to
a)
Swift ocean currents
b)
Weathering and erosion when it was an island
c)
Bioerosion over time
d)
The density of the rock it's made out of