The Rock Cycle

What are the three main types of rocks?

• Igneous, Sedimentary, and Metamorphic

• Volcanic, Oceanic, and Continental

• Hard, Soft, and Medium

• Sandstone, Limestone, and Granite

How is sedimentary rock primarily formed?

• Through extreme heat from molten rock.

• By layers of rock and dirt being squeezed together under pressure for a long time.

• When existing rocks are chemically changed by heat and pressure.

• From volcanic eruptions cooling rapidly.

What conditions are necessary for the formation of metamorphic rock?

• Rapid cooling of molten rock.

• Erosion and deposition of sediment in water.

• Extreme heat and pressure from proximity to magma.

• Weathering by wind and rain over millions of years.

How are igneous rocks formed?

• When layers of sediment are compressed over time.

• When existing rocks are transformed by chemical reactions.

• When molten rock (magma or lava) cools and hardens.

• Through the breakdown of larger rocks into smaller pieces.