Three Types of Rocks and the Rock Cycle

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Published on September 20, 2022 by

Rocks of different shapes and forms can be found all over the planet. In this video, the students will learn about the three main types of rocks and the rock cycle. Rocks are constantly and slowly changing through a process called rock cycle. The rock cycle with magma which crystallizes to form igneous rocks such as granite, pumice, tuff, and obsidian. These rocks may be broken down into small pieces due to erosion and weathering by external forces, such as wind and water. These pieces may be carried by water as sediments, which are deposited in layers that eventually become sedimentary rocks like shale and limestone. Some sedimentary rocks may be pushed below the surface due to tectonic activity, where they are subjected to pressure and temperature which transform them to metamorphic rocks. If these rocks move any deeper, they can form magma starting the rock cycle all over again.

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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