1.3 Continental Drift

Question 1 of 15

1

Why are earthquakes rare in ocean basins away from MORs?

Select one of the following:

Ocean basins are found in the middle of the plate where there is no tectonic activity.
Earthquakes only occur at MOR's.
It is aseismic.

Explanation

Question 2 of 15

1

Why is there a positive heat flow over the axial rift of an MOR?

Select one of the following:

Due to rising magma and volcanic activity.
Due to the density of the rocks.

Explanation

Question 3 of 15

1

How have satellites provided evidence for sea floor spreading?

Select one of the following:

They can measure the changing distance between two points over time.
They can predict movement of plates.

Explanation

Question 4 of 15

1

Fill the blank spaces to complete the text.

faults displace mid-ocean ridges.
They form to the axial rift.

Explanation

Question 5 of 15

1

Fill the blank spaces to complete the text.

Seismic has been used to provide evidence for mantle plumes and hot spots by taking images of heat flow to show areas of heat flow compared to cooler ones.

Explanation

Question 6 of 15

4

Click on each orange point and write the correct answer.

Label the image to show the formation of island chains and seamounts over a hotspot.

Explanation

Question 7 of 15

4

Fill the blank spaces to complete the text.

How does a chain of islands and seamounts develop over a hotspot?
Rising magma creates an .
The plate moves over the .
The mantle plume is .
Older islands and are eroded.

Explanation

Question 8 of 15

1

What is a mantle plume?

Select one of the following:

A stationary area of high heat flow in the mantle which rises from great depths and produces magma that feeds hot spot volcanoes.
A body of lower density buoyant material rising upwards.
The surface expression of a mantle plume.

Explanation

Question 9 of 15

10

Fill the blank spaces to complete the text.

Using the fit of Africa and S. America describe the evidence for the movements of continents over time.

Fit of the
- Fit along edge of continental .
- Few due to younger rock deposited.
- Few gaps due to .

Rock types
- Matching sequences across the join of the continents
- Same age of rocks across the
eg. Precambrian - cratons
eg. Carboniferous -

Mountain chains
- Same trend of mountain across the join of the continents
- structures such as folds / faults match up
- same rock types in the mountain belt across the join
- same of mountains across the join

Fossils
- outcrops of fossils match up / same fossils on different continents
- fossils that could not have crossed an ocean the same on both continents
eg reptile -
eg plants -
Glaciations
- direction of shows movement of ice and the striations match up
- glacial can be found on both continents
- glacial rocks match up across the join
- Carboniferous ice can be seen across Africa and South America

Explanation

Question 10 of 15

1

Fill the blank spaces to complete the text.

Fossils found in Africa and S. America used as evidence for continental drift:
Reptile =
Plant =

Explanation

Question 11 of 15

4

Click on each orange point and write the correct answer.

Label the diagram of an MOR.

Explanation

Question 12 of 15

1

Click on each orange point and write the correct answer.

Label the diagram of the oceanic-continental convergent plate margin.

Explanation

Question 13 of 15

8

Click on each orange point and write the correct answer.

Label the diagram of the continental-continental convergent plate margin.

Explanation

Question 14 of 15

6

Click on each orange point and write the correct answer.

Label the diagram of a oceanic-oceanic convergent plate margin.

Explanation

Question 15 of 15

1

Fill the blank spaces to complete the text.

Give examples of the different types of plate margins:
Divergent:
Oceanic-Continental Convergent: and
Continental-Continental Convergent: and
Oceanic-Oceanic Convergent: (subducting) and
Conservative: and

	Created by Izzy Backhouse over 8 years ago

Pgs. 24-45

1.3 Continental Drift

Question 1 of 15

Why are earthquakes rare in ocean basins away from MORs?

Select one of the following:

Explanation

Question 2 of 15

Why is there a positive heat flow over the axial rift of an MOR?

Select one of the following:

Explanation

Question 3 of 15

How have satellites provided evidence for sea floor spreading?

Select one of the following:

Explanation

Question 4 of 15

Fill the blank spaces to complete the text.

faults displace mid-ocean ridges. They form to the axial rift.

Explanation

Question 5 of 15

Fill the blank spaces to complete the text.

Seismic has been used to provide evidence for mantle plumes and hot spots by taking images of heat flow to show areas of heat flow compared to cooler ones.

Explanation

Question 6 of 15

Click on each orange point and write the correct answer.

Label the image to show the formation of island chains and seamounts over a hotspot.

Explanation

Question 7 of 15

Fill the blank spaces to complete the text.

How does a chain of islands and seamounts develop over a hotspot? Rising magma creates an . The plate moves over the . The mantle plume is . Older islands and are eroded.

Explanation

Question 8 of 15

What is a mantle plume?

Select one of the following:

Explanation

Question 9 of 15

Fill the blank spaces to complete the text.

Explanation

Question 10 of 15

Fill the blank spaces to complete the text.

Fossils found in Africa and S. America used as evidence for continental drift: Reptile = Plant =

Explanation

Question 11 of 15

Click on each orange point and write the correct answer.

Label the diagram of an MOR.

Explanation

Question 12 of 15

Click on each orange point and write the correct answer.

Label the diagram of the oceanic-continental convergent plate margin.

Explanation

Question 13 of 15

Click on each orange point and write the correct answer.

Label the diagram of the continental-continental convergent plate margin.

Explanation

Question 14 of 15

Click on each orange point and write the correct answer.

Label the diagram of a oceanic-oceanic convergent plate margin.

Explanation

Question 15 of 15

Fill the blank spaces to complete the text.

Give examples of the different types of plate margins: Divergent: Oceanic-Continental Convergent: and Continental-Continental Convergent: and Oceanic-Oceanic Convergent: (subducting) and Conservative: and

Explanation

faults displace mid-ocean ridges.
They form to the axial rift.

How does a chain of islands and seamounts develop over a hotspot?
Rising magma creates an .
The plate moves over the .
The mantle plume is .
Older islands and are eroded.

Fossils found in Africa and S. America used as evidence for continental drift:
Reptile =
Plant =

Give examples of the different types of plate margins:
Divergent:
Oceanic-Continental Convergent: and
Continental-Continental Convergent: and
Oceanic-Oceanic Convergent: (subducting) and
Conservative: and