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Chapter6
The Rock Cycle
Question | Answer |
---|---|
Mineral | A solid substance that occurs naturally in rocks or in the ground. |
rock | A solid substance made up of one or more minerals. |
igneous | A type of rock that forms from melted rock that cools and hardens. |
sedimentary | A type of rock that forms when layers of sediment are pressed togather. |
metamorphic | A type of rock that forms heat or pressure change an existing rock. |
rock cycle | The sequence of processes that change rocks from one type to another over long periods. |
weathering | The breaking down of rocks on earths surface into smaller pieces. |
erosion | The process of moving sediment from one place to another. |
humus | The remains of decayed plants or animals in the soil. |
horizon | A layer in the soil. |
bedrock | The solid rock that forms Earths surface |
sand | The largest particles that make up soil. |
clay | The smallest particles that make up soil |