Continental drift

Last updated almost 6 years ago
32 questions
Note from the author:
This is about the history of plate tectonics starting with continental drift and going forward with new technologies.
1

Who first proposed the theory of continental drift?

1

What year did Wegener publish his book?

1

What was Wegener's theory called?

1

What did Wegener's book have in it?

3

What were Wegner's 3 lines of evidence?

2

What were 2 of the fossils that Wegener used as part of his evidence?

2

What 2 places did they find tropical plant fossils that are currently covered in ice?

4

What did Wegener find in South Africa?

1

What kind of rock was in both North America and Scotland?

1

What did Wegener name the supercontinent?

2

What was the main reason that most scientists rejected Wegener's hypothesis?

2

When was this theory revisited?

1

What caused scientisit to revisit continental drift?

1

What did sonar find on the ocean bottom?

1

All are evidence to support the theory of continental drift EXCEPT

1

What new technology did scientists use to map the bathymetry of the ocean floor?

1

Magnetic stripes are ____________ on either side of the mid ocean ridge.

1

Rocks on the sea-floor that lie in a pattern, show a record of the reversals of

1

What new technology did scientists use to find changes on either side of the mid-ocean ridge?

1

Where is the youngest seafloor?

1

Sea-floor spreads apart at both sides of a _____ as new crust is added.

1

Drilling samples revealed that rock samples taken farther from a mid-ocean ridge are

1

What new information led to the expanding earth theory?

1

When continental plates collide what landform is made?

1

Which type of plates go under other plates?

1

What mixes with rock to melt it?

1

What causes the volcanoes on the ring of fire?

2

What is the example of a transform fault (where plates slide past each other)?

4

Label the direction of plate movement and convection in the asthenosphere for a divergent plate boundary. Draw arrows!

4

Label the direction of plate movement and convection in the asthenosphere for a convergent plate boundary. Draw arrows!

3

Explain what happens during the process of subduction in your own words.

2

Label the direction of plate movement of a transform plate boundary. Draw arrows!