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Dynamic Earth: Charac. of the Seafloor

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Complete the sentence describing the important ideas in Hess's theory:

Hess expanded on Wegener's theory of ______.
Pangaea landmass
continental drift
conveyor belt
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Terms in this set (38)
How does Earth's magnetic field provide evidence for seafloor spreading?

- It creates a pattern of alternating rock stripes on both sides of a mid-ocean ridge.
- It allows scientists to determine the age of drilling samples.
- It causes magma to harden quickly underwater.
- It shows that younger rocks are located deeper underwater than older rocks.