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Answer Key
Grade 8 Science: Geologic Processes & History of Earth
1.
rock
2.
Igneous
3.
Sedimentary
4.
Metamorphic
5.
Plate tectonics
6.
apart
7.
together
8.
plate boundaries/faults
9.
igneous rock weathers to sediment, forms sedimentary rock, which can metamorphose or melt back to magma (answers vary)
10.
matching coastlines, fossil distribution, seafloor spreading, earthquake patterns (any valid)
11.
when one tectonic plate sinks beneath another at a convergent boundary
12.
organism types reveal climate and habitat of ancient times
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