Rock Cycle

These rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface.

• metamorphic

• sedimentary

• igneous

These rocks are formed from other rocks that are changed because of heat or pressure. They are not made from molten rock.

• sedimentary

• igneous

• metamorphic

Rocks formed by the cooling and solidifying of molten materials. These rocks can form beneath the Earth's surface, or at its surface, as lava.

• metamorphic

• igneous

• sedimentary

The process that explains how the three basic rock types are related and how Earth processes, over geologic time, change a rock from one type into another.

• water cycle

• metamorphic

• rock cycle

Magma cools either underground or on the surface and hardens into an _______________ rock.

• igneous

• sedimentary

• metamorphic

_______________ is the formation of mineral grains from cooling magma.

• river

• volcano

• crystallization

Change within the rock cycle happens very slowly.

• True

• False

Weathering wears rocks at the Earth’s surface down into smaller pieces, called ______________.

• fossils

• sediments

• mud

__________________ is when rock is exposed to extreme heat and pressure within the Earth and does not melt.

• crystallization

• ice

• metamorphism

Molten rock that erupts from a volcano or vent; also the solid rock that forms when this substance cools.

• hot water

• lava

• magma