Page 16-17 Tectonic Hazards

Question 1

What are the two types of crust?

Answer 1

• Oceanic

- Continental

Question 2

Oceanic crust is ____ and _____

Answer 2

• thin

- dense

Question 3

Continental crust is _____ and ____ _____

Answer 3

• thick

- less dense

Question 4

What two names affect tectonic plate movement?

Answer 4

• ridge push

- slab pull

Question 5

Where does ridge push occur and how does it happen?

Answer 5

• occurs at constructive plate margins

- new oceanic crust slides away from the plate margin , pushing the plates apart

Question 6

Where does slab pull occur and how does it happen?

Answer 6

• occurs at destructive plate margins

- denser oceanic crust subducts under continental crust due to gravity , pulling the rest of the plate with it

Question 7

Name the three types of plate margin

Answer 7

• constructive
• destructive
• conservative

Question 8

What happens at a constructive plate margin?

Answer 8

Two plates move apart

Question 9

What happens at a destructive plate margin?

Answer 9

Both oceanic and continental plates converge causing the ground to fold forming fold mountains

Question 10

What happens at a conservative plate margin?

Answer 10

Both plates slide past each other in different directions or different speeds

Question 11

Give an example of a constructive plate margin

Answer 11

Mid-Atlantic Ridge

Question 12

Give an example of a destructive plate margin

Answer 12

Pacific Ring Of Fire

Question 13

Give an example of a conservative plate margin

Answer 13

San Andreas Fault