Earth Science Vocabulary-4th

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Minerals & Rocks - Chapter 8
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4th grade
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1

minerals

natural, non-living solid crystals that make up rocks

2

luster

the way its surface reflects light

3

sediment

eroded material that settles on land or on the bottoms of lakes, rivers, and oceans

4

sedimentary rock

rock that forms when sediments are cemented together and harden

5

igneous rock

rock that forms from molten rock

6

metamophic rock

rock that has changed as a result of heating and pressure