Rocks
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Transcript of Rocks
![Page 1: Rocks](https://reader033.fdocuments.in/reader033/viewer/2022052909/559880e91a28abca408b45b1/html5/thumbnails/1.jpg)
Earth Materials:Rocks and Minerals
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Rocks have many properties, including shape, size, color,
and texture.
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Geologists use rock propertiesto help identify different rocks.
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Rocks are made of many ingredients.
These ingredients are called minerals.
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Minerals have only ONE ingredient – the mineral itself.
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Evaporation is a techniqueused to separate liquid from
solid parts of a mixture.
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Crystal patterns left from evaporation can help us
identify minerals.
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Minerals have different properties, too.
Properties can include size, color, shape, mass, and …
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… hardness.
A scratch test is used to find the hardness of a mineral.
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The Moh’s Scale of Hardness
tells us the hardness or softnessof a mineral.
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Calcite is one of the most commonminerals on Earth.
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Calcite is the only mineral thatbubbles when it comes in
contact with cold acid.
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Evaporation can be used asan extra test to show a rock
contains calcite.
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Granite is a rock made up of minerals, including feldspar,
hornblende, mica, and quartz.