Continental Drift
Sea Floor Spreading
Review
100
Who hypothesized that the continents were once joined together?
Alfred Wegener
100
What is it called when there is a chain of underwater mountains along which sea-floor spreading occurs?
Mid-Ocean Ridge
100
What are the four spheres of the Earth?
Biosphere, Atmosphere, Geosphere, Hydrosphere
200
What was the name of the super continent?
Pangea
200
True or False: As you move further away from a Mid-Ocean Ridge, the ocean floor becomes older.
True
200
Name 1 of the 5 properties of minerals.
Hardness, Density, Luster, streak, and color
300
What is one piece of evidence used to support plate tectonics? (answers will vary)
Connect like a puzzle, mountain ranges lining up, coal fields match, fossil evidence
300
What happens to old oceanic crust as new molten material rises from the mantle?
The old crust gets pushed further from the mid-oceanic ridge.
300
What are the four layers of Earth's Interior?
Inner core, outer core, mantle, crust
400
What is one of the fossils that were found on continents now separated by oceans?
Mesosaurus or Lystrosaurus
400
What is the process called by which the ocean floor sinks into the mantle?
Subduction
400
What type of crust is thicker and lighter?
Continental Crust
500
Why was plate tectonics not accepted by geologists in this time?
There was not enough evidence that explained the force that moved the continents.
500
What is formed at place L?
Mid-Ocean Ridge
500
How does metamorphic rock turn into sediment?
Weathering and Erosion