Meaning & use
rock cycle
The continuous geological process by which rocks change between igneous, sedimentary, and metamorphic forms over time.
See it in a sentence
The teacher used a diagram to show how the rock cycle turns magma into igneous rock.
Weathering and heat both play a role in driving the rock cycle forward.
A note on using this word
Always used with 'the' before it, and the three rock types (igneous, sedimentary, metamorphic) are central to explaining it.
Words with a similar meaning
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