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Who first proposed the theory of continental drift?
What new technology did scientists use to map the bathymetry of the ocean floor?
Sea-floor spreads apart at both sides of a _____ as new crust is added.
Drilling samples revealed that rock samples taken farther from a mid-ocean ridge are
Label the direction of plate movement and convection in the asthenosphere for a divergent plate boundary. Draw arrows!
Label the direction of plate movement and convection in the asthenosphere for a convergent plate boundary. Draw arrows!
Label the direction of plate movement of a transform plate boundary. Draw arrows!
Explain what happens during the process of subduction in your own words.
What year did Wegener publish his book?
What was Wegener's theory called?
What did Wegener's book have in it?
What were Wegner's 3 lines of evidence?
What were 2 of the fossils that Wegener used as part of his evidence?
What 2 places did they find tropical plant fossils that are currently covered in ice?
What did Wegener find in South Africa?
What kind of rock was in both North America and Scotland?
What did Wegener name the supercontinent?
What was the main reason that most scientists rejected Wegener's hypothesis?
When was this theory revisited?
What caused scientisit to revisit continental drift?
What did sonar find on the ocean bottom?