Which phrases apply to metamorphic rocks? Check all that apply.

form under extreme heat and pressure
form from existing rocks
form from magma and lava
form when sediments combine
form from volcanic eruptions

1 answer

The phrases that apply to metamorphic rocks are:

  • form under extreme heat and pressure
  • form from existing rocks

Metamorphic rocks are created when existing rocks (either igneous, sedimentary, or other metamorphic rocks) undergo changes due to high temperature and pressure conditions. The other phrases pertain to different rock types.

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