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Dynamic Earth: Charac. of the Seafloor

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Get a hint
Hess expanded on Wegener's theory of _____.
Pangaea landmass
continental drift
conveyor belt
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What evidence supports Hess's theory of seafloor spreading? Check all that apply.

fossils of the same animals found in different areas
the direction iron in ocean rocks points
the tilt and rotation of the Earth's axis
the age of different rocks on Earth's surface
pillow-shaped rocks found in the sea
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.