SME
Grade 6 Science · Earth & Space Science
The rock cycle
Follow rock as it melts, cools, wears away, settles in layers and is squeezed into new kinds of rock.
Explore
Deep underground, heat melts rock into magma.
Assumptions
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Any kind of rock can become any other kind; there is no single path.
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Sunlight and gravity drive the steps at the surface. Earth’s inner heat drives melting and metamorphism.
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Most steps take thousands to millions of years.
Topic check
See what you know: 5 questions on this topic
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