boundaries
continental drift
seafloor spreading
landforms
vocabulary
100
divergent boundary
Where 2 plates pull apart?
100
Continents move
What is continental drift?
100
molten material rises from the mantle and erupts
What is the mid-ocean ridge?
100
Long chain of mountain range under the Atlantic Ocean
What is the Mid-Ocean ridge
100
When an oceanic plate converges with a continental plate
What is subduction?
200
convergent boundary
Where 2 plates come together?
200
Pangaea
What is the supercontinent?
200
found in all Earth's oceans
What is the mid-ocean ridge?
200
2 divergent plates on land
What is a rift valley?
300
transform
Where 2 plates slide past each other
300
Africa and South America
What 2 continents Wegner thought look like puzzle pieces?
300
matching patterns of magnetic stripes found in the crust on the ocean floor
What is evidence of sea-floor spreading?
300
caused by subduction
What is trench?
300
Break in the Earth's crust
What is fault?
400
Eurasia and the India plates
What is causing the Himalayas to grow?
400
land features, fossils and climate
What is the evidence for continental drift?
400
gravity
What causes subduction to occur?
400
Caused by transform plates
What is a fault?
400
process that adds new crust to the ocean floor
What is sea-floor spreading?
500
African and Eurasian plate
What is going to make the Mediterrean Sea smaller and mountains will form?
500
Did not know how the continents moved
What is the reason Alfred Wegner's theory of continental drift was rejected?
500
because it is colder
What is old crust is denser than new crust?
500
Made by convergent boundaries on land
What are mountains?
500
pieces of the lithosphere attached to the crust
What is a plate?
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