Rocks and the Rock Cycle: the Rock Cycle

The video explores the origin of sand, explaining that it comes from rocks through weathering and erosion. It introduces the rock cycle, detailing how rocks transform between sedimentary, metamorphic, and igneous forms. The process of sedimentary rock formation is explained, including examples like conglomerate and shale. The video also covers how metamorphic rocks form under heat and pressure, and how igneous rocks form from cooled magma. The cycle is continuous, with rocks breaking down into sediments to start the process anew.

What process is primarily responsible for breaking down rocks into sand?

• Heat and pressure

• Compaction and cementation

• Weathering and erosion

• Melting and cooling

Which type of rock is formed when sediments are compacted and cemented together?

• Volcanic rock

• Sedimentary rock

• Metamorphic rock

• Igneous rock

What does shale transform into when subjected to heat and pressure?

• Granite

• Slate

• Basalt

• Conglomerate

What can happen to metamorphic rocks when exposed to high heat deep within the Earth?

• They transform into shale

• They become sediments

• They melt into magma

• They form conglomerate

What is the result when magma cools on the Earth's surface?

• It forms sedimentary rocks

• It forms igneous rocks

• It forms conglomerate

• It forms metamorphic rocks