What is the Rock Cycle?

How are the three main types of rocks on Earth primarily categorized?

• By their color and texture.

• By the way in which they form.

• By their mineral composition.

• By their age and location.

How did sandstone form according to the video?

• cooling of lava

• intense heat and pressure

• compaction and cementation of sand grains

• erosion of metamorphic rocks

List the three types of rocks.

• volcanic, crystalline, organic
• basaltic, granite, quartzite
• fossil, lunar, solar
• igneous, sedimentary, metamorphic

Explain the purpose of the arrows going in different directions.

• The arrows represent the color of various items.
• The arrows show the size of different elements.
• The purpose of the arrows is to illustrate the direction of relationships or processes.
• The arrows indicate the speed of moving objects.

What process leads to the formation of igneous rocks?

• Compaction and cementation of sediments.

• Exposure of existing rocks to intense heat and pressure.

• Cooling and solidification of molten magma or lava.

• Weathering and erosion of existing rock formations.

Which rocks can melt into magma or lava and then form igneous rock?

• only igneous rocks

• only sedimentary rocks

• only metamorphic rocks

• sedimentary, metamorphic, or igneous rocks

Which process is primarily responsible for the formation of sedimentary rocks?

• Melting of existing rocks deep underground.

• Alteration of rocks due to tectonic plate movement.

• Weathering, erosion, compaction, and cementation of rock fragments.

• Rapid cooling of lava on the Earth's surface.

How do metamorphic rocks primarily form?

• Through the rapid cooling of molten rock.

• By the accumulation and cementation of organic matter.

• From existing rocks being altered by intense heat and pressure.

• As a result of volcanic eruptions on the Earth's surface.

Why is the rock cycle considered "dynamic"?

• Rocks never change.

• Rocks evolve over time due to ongoing Earth processes.

• Rocks only form in oceans.

• Rocks are made instantly.

Which statement best summarizes how a rock could change type in the rock cycle?

• Igneous rock can become sedimentary, but not metamorphic.

• Any rock type can transform into another rock type under certain conditions.

• Rocks only change if exposed to magma.

• Sedimentary rocks cannot change once formed.