Ch. 2 Notes (plate tectonics)

Question 1

What is Pangea?

Answer 1

the idea that the continents were once all connected

Question 2

Who is Alfred Wegener?

Answer 2

Came up with the idea of pangea

Question 3

Who is Alexander du Toit?

Answer 3

Credited with putting the continents together

Question 4

Divergent Boundary

Answer 4

Plates pull apart, asthenosphere rises to form crust

Question 5

Convergent Boundary

Answer 5

plates collide, one goes up the other goes down removing crust

Question 6

What are the three types of convergent boundaries?

Answer 6

Ocean- continent (ocean goes down)
ocean- ocean (more dense goes down)
continent-continent ( more dense goes down ex. car wreck)

Question 7

Transform Boundary

Answer 7

plates slide past each other

Question 8

How long ago did North America and Europe/Africa separate?

Answer 8

180 million years ago

Question 9

“Fixed” locations in the mantle/core, but plates moving over them

Answer 9

Hotspots

Question 10

A type of heat transfer that involves the actual movement of a substance

Answer 10

convection

• warm air rises
• cool air sinks