Metamorphic rocks

-................................. rock forms when a rock is changed by heat or pressure or by chemical reactions.

-

-When high heat and pressure are applied to rock, the rock's shape, texture, or composition can change .

• true

• false

-Most ................................... rock forms deep inside Earth, where both heat and pressure are much greater than at Earth's surface.

• metamorphic

• igneous

• sedimentary

.........................can push rock down toward the deeper, hotter mantle, altering the rock.

• Collisions between Earth's plates

• chemical changes

• deposition

-The heat that changes rock into .................................. rock can also come from very hot magma that rises up into colder rock.

• sedimentary

• metamorphic

• igneous

Metamorphic rocks whose grains are arranged in parallel layers or bands are

• non-foliated

• foliated

-as the crystals in granite can be flattened to form the foliated texture of

• marble

• gneiss

-Some metamorphic rocks, such as ............................, are non-foliated. Their mineral grains are arranged randomly.

• marble

• gneiss