Everybody Needs A Rock by Byrd Baylor, If You Find a Rock by Peggy Christian
Physical Science – Properties of Matter
Earth Science – Earth materials we use
Start. Collecting Rocks: an outdoor experience
You need to help your child collect rocks--Lots of Rocks--of all shapes and sizes. They can come from every place imaginable: the local hardware store, grandpa’s junk collection, parking lots, mom’s junk drawer, and even from the next-door neighbor’s yard (with permission, of course). Everyone can help but it must be the child (or children) who organizes and carries out the majority of the finding. Get neighbors and relatives to help.
You should know that some rocks are made by people and are used for many important jobs. Bricks, tiles, clay pots, cement, asphalt, and slag are some groups of Manufactured Rocks. The other group of rocks are what is called Natural Rocks, rocks made in/by nature. These rocks are broken down over time by natural forces. Earthquakes, rivers, glaciers and wind are forces that make little rocks out of big ones.
Rocks are solid pieces of the earth’s crust, made up of one or more different minerals. Rocks are of three major types: igneous, sedimentary, and metamorphic. Igneous rocks are formed when magma solidifies. Granite, pumice, and obsidian are good examples. Sedimentary rocks are the largest group and are formed by the cementing together of particles of rock, clay, or sand. Shale, limestone, and sandstone are examples. Metamorphic rocks are the least common and are formed when igneous or sedimentary rocks are placed under extreme heat or pressure or when a chemical change takes place in their composition. Slate, quartz, and marble are examples of metamorphic rocks.
~ Dr. Bob ~
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