metamorphic rock

Definition

Metamorphic rocks are rocks that have been changed by heat and pressure. They are formed when existing rocks are buried deep underground and subjected to high temperatures and pressures.

Metamorphic rocks are often very different from the rocks they were formed from. They can be harder, denser, and have a different texture.

Some common metamorphic rocks include slate, gneiss, and marble. Slate is a metamorphic rock that is formed from shale. Gneiss is a metamorphic rock that is formed from granite. Marble is a metamorphic rock that is formed from limestone.

Metamorphic rocks are an important part of our world. They are used to make everything from countertops to buildings to jewellery.

How can the word be used?

Metamorphic rocks are formed when rocks are subjected to heat and pressure.

Different forms of the word

Noun: A rock that has been changed from its original form by heat and pressure.

Adjective: Relating to or made of metamorphic rock.

Verb: To change (a rock) into metamorphic rock.

Etymology

The word "metamorphic rock" comes from the Greek words "meta" (change) and "morphē" (form). The word "metamorphic" was first used in English in the 17th century.

Question

What is metamorphic rock?