# Science

What could the relative age of two rocks tell you about them?

a. One rock is 10,000 years old, and the other is 8,000 years old.
b. One rock is older than the other.
c. They both have fossils in them.
d. One rock is closer to the surface than the other.

What would a geologist do if he/she wanted to determine the age of rock layers at a given location using relative age?

a. Find some information on the approximate age of local landforms.
b. Find the relative age of one rock at the given location.
c. Find the relative and absolute ages of all rock layers at that location.
d. Find a fossil in a sedimentary rock layer nearby.

How does folding change rock layers?

a. Folding can alter the composition of rock layers.
b. Folding can change the position in which rock layers appear.
c. Folding always moves younger rock layers to the surface.
d. Folding does not change rock layers.

Sometimes, layers of rock are overturned so frequently that the youngest rock layer may appear at the bottom, which is reverse of what is ordinarily expected.

a. True
b. False

My answers: b, b, b, a

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1. They're all correct!

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posted by Emily

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