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Ocean Floor Practice



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

The section of a continent that lies just off the shoreline and extends beneath the ocean is called the continental
a.
plain.
c.
ridge.
b.
shelf.
d.
basin.
 

 2. 

Where will you find the tallest mountains on Earth?
a.
the Island of Hawaii is the tallest mountain on Earth
b.
Mt. Everest in the Himalayas
c.
in Washington state, Mt. Ranier
d.
in Alaska, Denali
 

 3. 

mc003-1.jpgWhat feature is letter C?
a.
a guyot
c.
continental shelf
b.
abyssal plain
d.
continental slope
 

 4. 

What do we call the part of the continent that is under the water at the beach as we start walking into the water?
a.
the continental shelf
c.
the abyssal plain
b.
the seashore
d.
the continental slope
 

 5. 

This word means the land features and elevations of an area.
a.
oceanography
c.
topography
b.
geography
d.
physiology
 

 6. 

The floor of the ocean
a.
has rivers and lakes.
c.
is hidden and unknown
b.
has mountains and trenches.
d.
is smooth and sandy.
 

 7. 

Which of the oceans is the largest?
a.
Indian
c.
Pacific
b.
Atlantic
d.
Southern
 

 8. 

If you could look at the deep ocean floor, which is the best description of what you would see?
a.
coral reefs with many varieties of life
c.
flat, silt-covered, lifeless regions
b.
high mountains and deep valleys
d.
ocean ridges with active volcanoes
 

 9. 

The flattest place on Earth is
a.
the Abyssal Plain
c.
in Oklahoma on the Great Plains
b.
the Sahara Desert
d.
the continental shelf
 

 10. 

What is a guyot?
a.
a volcanic island
c.
a mountain under the sea
b.
the edge of the rift valley
d.
a flat topped sea mount flattened by the waves
 

 11. 

mc011-1.jpgWhat ocean floor feature is letter h?
a.
a guyot
c.
an island
b.
mid-ocean ridge
d.
a seamount
 

 12. 

mc012-1.jpgWhat is usually the deepest part of the ocean and is formed by convergent ocean plates?
a.
deep sea trench
c.
the abyssal plain
b.
continental slope
d.
the rift valley
 

 13. 

Which of the oceans is the deepest?
a.
Indian
c.
Southern
b.
Pacific
d.
Atlantic
 

 14. 

The total salinity of the world’s oceans is
a.
3.5%
c.
50 %
b.
25%
d.
15%
 

 15. 

Use this picture and your knowledge to answer this question.
mc015-1.jpg
At which ocean feature would the greatest amount of water pressure be exerted?
a.
Abyssal plain
c.
Continental slope
b.
Continental shelf
d.
Trench
 

 16. 

In some areas of the ocean, this can be over 4 miles deep.
a.
sediment
c.
deep sea trenches
b.
mid ocean ridges
d.
submarine canyons
 

 17. 

How have oceanographers been able to map the sea floor?
a.
by studying seismic waves
c.
by sending out scuba divers
b.
by using submarines
d.
by using echo sounding
 

 18. 

Which is the correct sequence of seafloor features as you move from the shoreline outward?
a.
continental shelf - continental slope - abyssal plain
b.
continental slope - continental shelf - abyssal plain
c.
continental shelf - continental slope - mid-ocean ridge
d.
continental slope - abyssal plain - mid-ocean ridge
 



 
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