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14.1 Earth’s Undersea World

Last updated about 3 years ago

6 questions

Instructions

1

1

9

2

6

2

As read Chapter 9, “Earth’s Undersea World,” answer the following questions.

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Part B: Why might these animals live near these particular seafloor features?

Question 5

5.

Draggable item		Corresponding Item

Question 6

6.

On page 84, the author uses a simile when describing the mountain chain formed by mid-ocean ridges, saying it is like the stitching on a baseball.

Explain what this simile means.

Seafloor spreading explains which of the following?

A. the presence of mid-ocean ridges on the seafloor 

B. Wegener’s theory of continental drift

C. the formation of hydrothermal vents

D. All of the above

E. A and B only

Which phrase describes the Mid-Atlantic Ridge?

A. a warm, dark area on the sea floor 

B. a long, rugged underwater mountain range 

C. a cluster of seamounts 

D. a cluster of hydrothermal vents

Part A: Drag each animal to the seafloor feature it lives around.

white crabs

pale, blind shrimp

anemones

schools of fish

football-sized clams

giant tube worms

brittle stars

deep-sea corals

sponges

Hydrothermal Vents (4)

Seamounts (5)

Match each cause (left side) to each effect (right side)

One tectonic plate slides under another

islands are formed

Tectonic plates collide

a trench is formed

Water seeps into the earth’s crust and is heated by magma

seafloor spreading

Tectonic plates move apart very slowly

continental drift

Seamount emerges from the ocean’s surface

hydrothermal vents are formed

Seafloor spreading

mountains are formed