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Vocabulary for Rocks
6th grade science vocabulary for rocks, minerals, and soil
Term | Definition |
---|---|
rock cycle | The slow process by which old rocks are recycled into new rocks. |
rock | A naturally occurring solid mixture of minerals and organic matter. |
texture | The size, shape and position of the grains that make up a rock. |
strata | layers of rock |
sediments | Small grains and fragments of weathered rock. |
metamorphic | This type of rock forms deep in the earth as a result of extreme heat and pressure. |
extrusive igneous rock | This fine-grained rock forms as magma cools quickly on the surface. |
erosion | The process by which sediment is removed from its source. |
deposition | The process by which eroded sediment is laid down. |
igneous | Rock formed from cooled magma. |
composition | The chemical make-up of a rock. |
sedimentary | This type of rock forms as deposited sediment becomes compacted and cemented. |
chemical weathering | the breakdown of rock into smaller pieces by chemical means such as carbon dioxide dissolved in water |
physical weathering | the breakdown of rock into smaller pieces by physical means such as wind and water |
intrusive igneous rock | Forms as magma cools slowly within the Earth. |
organic | Living or alive at one time (plant/animal matter) |
inorganic | this type of material was never alive |