What Are Rocks and How Do They Form?

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Published on September 19, 2022 by

In this video, Alizé Carrère will provide a detailed description of Earth’s layers and the rock cycle. The journey to the center of the Earth begins with the atmosphere, followed by a crust, mantel, and ends at the core. Each layer has a distinct elemental composition and temperature, which gives us the rocks and landforms on the surface.  Learning about the Earth’s interior helps study earthquakes, volcanic eruptions, the origin of life, and the formation of continents. The rock cycle is a process by which new rocks are formed and old rocks are broken down. A granite boulder that starts off as an igneous rock may be transformed by external forces into sedimentary rock or metamorphic rock. Each piece of rock has stories of millions of years etched by the processes on and deep earth.

The video satisfies the 4-ESS1-1 requirement of fourth-grade science proficiency.

Students who demonstrate understanding can: 4-ESS1-1. Identify evidence from patterns in rock formations and fossils in rock layers to support an explanation for changes in a landscape over time.

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