Unit 7.2 notes

Question 1

Which plate is denser, continental or oceanic

Answer 1

Oceanic

Question 2

The earths unchanging size implies that

Answer 2

The earth’s crust must be destroyed at the same rate that it is created

Question 3

What happens in convergent boundaries

Answer 3

Destructive earthquakes and rapid mountain uplift

Question 4

What is the most visible spectacular co sequence of plate tectonics

Answer 4

Himmalyan mountain range

Question 5

Example of a transform boundary

Answer 5

San Andreas fault zone in California

Question 6

Normal fault

Answer 6

When rock is pulled apart by tension. The hanging wall moves down relative to the footwall

Question 7

Reverse fault

Answer 7

When rocks are pushed together by compression

Question 8

Strike slip fault

Answer 8

Form when opposing stresses cause rock to break and move horizontally

Question 9

What are the two types of folds

Answer 9

Anticlines and synclines

Question 10

Best known divergent boundary

Answer 10

Mid Atlantic ridge

Question 11

What type of stress happens at convergent boundaries

Answer 11

Compression

Question 12

What happens at divergent boundaries

Answer 12

Tension

Question 13

What happens at transform boundaries

Answer 13

Sheer stress