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Consider the statements A, B, C on metamorphic rocks and choose the correct answer: A. When igneous and sedimentary rocks are subjected to heat and pressure they change to metamorphic rocks. B. Metamorphic rocks melt to form molten magma when subjected to great heat and pressure. C. Marble is a metamorphic rock.

Consider the statements A, B, C on metamorphic rocks and choose the correct answer: A. When igneous and sedimentary rocks are subjected to heat and pressure they change to metamorphic rocks. B. Metamorphic rocks melt to form molten magma when subjected to great heat and pressure. C. Marble is a metamorphic rock. Correct Answer A, B, C all are correct

The correct answer is A, B, C all are correct.

Important Points

There are three types of rocks which include igneous, sedimentary and metamorphic rocks.

  • Igneous Rock: It forms when magma cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock. For example, granite, pegmatite, etc.
  • Sedimentary Rock: It forms from the deposition of materials and solidification of sediment. For example, shale, sandstone, etc.
  • Metamorphic Rock: It forms when igneous and sedimentary rocks are changed because of heat and pressure. For example, marble, gneiss, etc.
  • Metamorphic rocks melt to form molten magma when subjected to great heat and pressure.
  • When igneous and sedimentary rocks are subjected to heat and pressure they change to metamorphic rocks.

Hence, from the above-mentioned points, it becomes clear that all the given statements are correct.

​Additional Information

Note: Actually, there exists a rock cycle that again melts metamorphic rocks into magma through heat and pressure and forms igneous rocks.

Refer to the image for further information:-

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Related Questions

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