# geology

1. What fraction of the Earth is made up of each of the major compositional layers: core, mantle, and crust?

2. What cities lie the same distance from our town as the boundaries of the following layers in the Earth lie from the solid surface?

a.Base of oceanic crust or top of the mantle under the ocean.
b.Base of the sub-oceanic lithosphere or top of the aesthenosphere beneath oceanic crust.
c.Base of the aesthenosphere or top of the mesosphere.

*** So do I convert oceanic crust, lithosphere, and asthenosphere into miles, then get a map and find the nearest cities?

I'm just fuzzy on what to convert because of the base of and top of wordings.

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1. So do I convert oceanic crust, lithosphere, and asthenosphere into miles, then get a map and find the nearest cities?

Yes. It is an exercise for you to see just how large these distance.

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posted by Dr Russ

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