GizmosAnswerKey
Earth & Space ScienceGrade 6-8

Rock Cycle Answer Key

Trace the journey of rocks as they transform between igneous, sedimentary, and metamorphic types.

Prior Knowledge Questions

Q1.What are the three main types of rocks?

Answer

Igneous, sedimentary, and metamorphic rocks.

Q2.How are igneous rocks formed?

Answer

Igneous rocks form when magma (underground) or lava (above ground) cools and solidifies.

Q3.What is weathering?

Answer

Weathering is the breaking down of rocks into smaller pieces by wind, water, ice, or chemical processes.

Activity A – Rock Transformations

Q1.How do sedimentary rocks form?

Answer

Sedimentary rocks form when sediments (sand, mud, shells) are deposited in layers and compacted over time.

Q2.What conditions create metamorphic rocks?

Answer

Metamorphic rocks form when existing rocks are subjected to intense heat and pressure deep within the Earth.

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