Types of Rocks and the Rock Cycle

How do sedimentary rocks form?

• Sedimentary rocks are formed from molten lava that cools and solidifies.

• Sedimentary rocks are formed from weathered bits of rocks (sediments) that are deposited into layers, compacted by overlying layers, and cemented by minerals.

• Sedimentary rocks are formed from the metamorphosis of igneous rocks under extreme pressure and temperature.

• Sedimentary rocks are formed from the crystallization of minerals from a solution.

What is metamorphic rock?

• Rock formed from existing rock; heat and pressure cause the minerals to form new combinations or new crystals.

• Rock that is formed from the cooling and solidification of magma or lava.

• Rock that is formed from the accumulation of sediment over time.

• Rock that has been broken down into smaller pieces and re-cemented together.

What is sedimentary rock?

• Rock formed from compacted sediment.

• Rock formed from volcanic activity.

• Rock formed from metamorphic processes.

• Rock formed from crystallized minerals.

What are the key steps of the rock cycle?

• Magma cools to form igneous rock, which weathers into sediments, compacting to form sedimentary rock, which transforms into metamorphic rock under heat and pressure, and can melt back into magma.

• Sedimentary rock is formed directly from magma cooling and does not undergo any transformation.

• Metamorphic rock is created by the erosion of igneous rock into sediments, which then compact to form sedimentary rock.

• Igneous rock is formed from the compression of metamorphic rock without any heat or pressure involved.

What is igneous rock?

• Rock formed from magma or lava.

• Rock formed from sediment compression.

• Rock formed from metamorphic processes.

• Rock formed from organic materials.