Rock Cycle

How do we describe how metamorphic, igneous, and sedimentary rocks form?

• By their formation processes: metamorphic rocks form from heat and pressure, igneous rocks form from cooling magma or lava, and sedimentary rocks form from compacted sediments.

• By their color and size only.

• By the amount of water they contain.

• By the type of fossils they have.

How do each type change through geologic processes in the rock cycle?

• They transform into other types of rocks through processes like melting, cooling, heat, and pressure.

• They remain unchanged throughout the rock cycle.

• They only break down into smaller pieces.

• They disappear completely from the rock cycle.

Metamorphic, igneous, and sedimentary rocks form and change through geologic processes in the rock cycle. Which of the following best describes how each type of rock forms?

• Metamorphic rocks form from cooling magma, igneous rocks form from compacted sediments, sedimentary rocks form from heat and pressure.

• Metamorphic rocks form from heat and pressure, igneous rocks form from cooling magma, sedimentary rocks form from compacted sediments.

• Metamorphic rocks form from weathering, igneous rocks form from erosion, sedimentary rocks form from melting.

• Metamorphic rocks form from melting, igneous rocks form from erosion, sedimentary rocks form from heat and pressure.

What do you notice about the image on the left?

• It shows a bar graph.

• It is a pie chart.

• It is a line graph.

• It is a table.

I notice that the image has many ________ that connect to ________ rocks. It is not a __________ cycle. (Refer to the diagram of the rock cycle on the left.)

• arrows, different, simple

• lines, same, complex

• dots, identical, circular

• paths, similar, endless

Sedimentary rock is formed by:

• Cooling of magma

• Compaction and cementation of sediments

• Melting of rocks

• Solidification of lava

Sedimentary rock is formed when ...

List four common forms of erosion.

• Wind, water, gravity, and ice

• Sunlight, sound, heat, and pressure

• Oxygen, nitrogen, carbon dioxide, and hydrogen

• Magnetism, electricity, friction, and tension

What is weathering?

• The process of forming sedimentary rocks

• A term that covers different natural phenomenon, such as rain, ice, and wind, that can cause the erosion of sedimentary rocks

• The movement of tectonic plates

• The melting of glaciers

Gravity can also bring pieces of ______ down.

• sediment

• clouds

• light

• metal