Earthquakes

Question 1

When did the earth form?

Answer 1

4.6billions years ago

Question 2

What is the order of earth layers from outside to the inside ?

Answer 2

Crust
Mantle
Outer core
Inner core

Question 3

What is a constructive margin?

Answer 3

At constructive margin two plates are diverging above the upward plume of a convection cell. Magma rises through the gap between the two plates , resulting in volcanos

Question 4

What is destructive margin ?

Answer 4

It occurs where tow plates, one made of continental crust and one made of oceanic crust are converging. Where the two plates meet, the oceanic plate dives beneath the continental plate , because it is denser

Question 5

What is collision margin?

Answer 5

Occurs when two plates made of continental crust converge. Because neither of plates is denser than the other, subduction does not occur

Question 6

What is conservative margin ?

Answer 6

Occur where two plates move alongside to one another in opposite directions or in the same direction .

Question 7

What types of plate margins create tsunami?

Answer 7

Destructive

Question 8

Describe the movement of the sea floor during an earthquake that creates tsunami

Answer 8

The subduction plate can catch the edge of the continental crust and bend it downwards, when the plates slip the see floor jibs violently upwards creating the tsunami

Question 9

How far apart are the crest of ordinary waves?

Answer 9

100-200 m

Question 10

How far apart are the crest of a tsunami wave ?

Answer 10

300 miles

Question 11

How fast do tsunami travel through the open ocean?

Answer 11

600mph