EVERYDAY SCIENCE

Detailed explanation-1: -Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.

Detailed explanation-2: -Metamorphic rocks form when heat and pressure transform an existing rock into a new rock. Contact metamorphism occurs when hot magma transforms the rock that it contacts. Regional metamorphism transforms large areas of existing rocks under the tremendous heat and pressure created by geologic processes.

Detailed explanation-3: -Heat is an important factor when it comes to metamorphic rocks because it helps change the composition of that rock before it undergoes pressure. Heat has the characteristic of breaking bonds between molecules and atoms. When heat is applied to a rock, it rearranges the mineral crystals that are within the rock.

Detailed explanation-4: -Igneous and sedimentary rocks can change into metamorphic rocks under great heat and pressure. For example, clay changes to slate and limestone changes to marble.