Unit C: Earth's Surface
Chapter 2: Rocks and Minerals
Chapter 2 Introduction
Rocks and Minerals are all around you. The ground you walk on every day is made of rocks and minerals. They are in the soil. They are the gems that sparkle in jewelry. The Earth itself is made mostly of rocks and minerals.
Click on the button below to watch and interact with a video about rocks and minerals. |
Chapter 2, Lesson 1: What are Minerals?
Summary
Some minerals form in Earth's mantle, and others form at or near Earth's surface. Minerals can be identified by their properties. Some mineral properties are streak, hardness, and luster. People use minerals in many ways. Click on the button below to watch and interact with a video about the minerals. |
Chapter 2, Lesson 2: What are Rocks?
Summary
Rocks are made up of one or more minerals. Rocks are classified by the way they form. Igneous rocks form when magma or lava cools and hardens. Sedimentary rocks are usually made of pieces of rock that have been squeezed and stuck together. Metamorphic rocks form when heat and pressure change rocks. Click on the button below to watch and interact with a video about rocks and soil. |
Chapter 2, Lesson 3: What is the Rock Cycle?
Summary
Rocks change from one kind to another in the rock cycle. Some of the processes in the rock cycle are weathering, erosion, melting, compaction, and cementation. Click on the button below to watch and interact with a video about the rock cycle. |
For Review
Click the picture for another video to review what you have learned.