The idea that all of the continents used to be one supercontinent.
15
What is the name of the SUPERCONTINENT?
Pangaea
5
Give TWO pieces of evidence for Continental Drift Theory (there are at least 5).
Climate, Fossils of Reptiles, Plants found on different continents, fit of the continents like a puzzle, mountain ranges that match up in S. America and Africa
20
Who came up with the theory of Sea Floor Spreading?
Harry Hess
15
What is Sea Floor Spreading?
The process that continually adds new material to the ocean floor from magma escaping the mantle.
20
What evidence did Harry Hess use for Sea-Floor Spreading? Tell at least ONE.
magnetic stripes of rock on the ocean floor, molten material that cooled quickly, and drilling samples (age of rock)
15
How are converging boundaries moving and what do they cause?
They COLLIDE and cause FORMATION OF MOUNTAINS or SUBDUCTION
25
How are DIVERGENT BOUNDARIES moving and what do they cause?
They PULL APART or move AWAY from each other, causing DEEP VALLEYS (rift valleys)
25
How are TRANSFORM BOUNDARIES moving and what do they cause?
They are SLIPPING past each other and they frequently cause EARTHQUAKES.
25
What are the 3 types of boundaries?
Transform, Convergent, and Divergent
20
Which layer of the earth contains the tectonic plates?
lithosphere
10
Where one plate meets another is called a _________ ________________.