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Wegener/SFS and subduction

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.
What ocean is growing by sea floor spreading?
a)
Atlantic
b)
Pacific
2.
What ocean is shrinking by subduction?
a)
Atlantic
b)
Pacific
3.
What device was used by scientists to discover what was happening under the ocean?
a)
sonar
b)
radar
4.

What is the name of the underwater mountain range that is splitting Iceland?

a)

Mid Atlantic Ridge

b)

San Andreas Fault

5.

What was Wegener's theory?

a)

the earth is flat

b)

the continents were once joined together

6.

What is Pangaea?

a)

an underwater mountain chain

b)

a supercontinent that existed millions of years ago

7.

What did Wegener notice about the continents?

a)

their coastlines fit together like puzzle pieces

b)

most of them start with the letter A

8.

Wegener found similar fossils on continents that are now?

a)

joined by land bridges

b)

separated by water

9.

Evidence of glaciers was found on what two warm continents?

a)

Africa and South America

b)

Australia and Africa

10.
What type of boundary formed the Himalaya mountains?
a)
divergent
b)
convergent
c)
transform
11.

Wegener believed that Antarctica was once warm because:

a)

coal was found there

b)

dinosaur fossils were found there

12.

Why didn't scientists believe Wegener?

a)

he could not prove how the continents moved

b)

he failed middle school science

13.

What is the cause of most tsunamis?

a)

an earthquake underwater

b)

a boat striking an iceberg

14.

What is the sign of an impending tsunami?

a)

whales beach themselves

b)

the ocean recedes (the beach gets large)

15.

Where do most tsunamis occur?

a)

Ring of Fire (Pacific Ocean)

b)

Mid Atlantic Ridge (Atlantic Ocean)