| A | B |
|---|
| rock | a naturally formed mass of minerals; a stone |
| mineral | a naturally occurring inorganic substance; rocks are made up of this |
| geology | the study of rocks, minerals and the structure of the earth |
| granite | a common rock that is made up of the minerals mica, feldspar and quartz |
| igneous | a type of rock that is formed when melted rock cools |
| sedimentary | a type of rock that is formed when layers of sediment are placed on top of each other |
| metamorphic | a type of rock that has been changed by heat or pressure |
| magma | melted rock found far below the earth's surface |
| fossil | the imprint of an organism, such as a plant or a skeleton, found inside of a rock |
| texture | how something feels; the grain structure of a rock or a mineral |
| luster | the brightness of a rock or a mineral |
