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Rocks Vocabulary
6th Grade Science Vocabulary
| Question | Answer |
|---|---|
| the process of breaking rock into smaller pieces. | weathering |
| the movement of sediment to new locations | erosion |
| the dropping of sediment from wind or water that slows down, or from ice that melts | deposition |
| a process when layers of sediment build up over millions of years and become packed down. | sedimentation |
| the process that causes compacted particles of sediment to become glued together. "Mother Nature's Glue" | cementation |
| a type of sedimentary rock that is made of sediments that were weathered, transported, and deposited in layers. | clastic rock |
| a type of sedimentary rock that is formed from minerals that were dissolved in water, came out of solution, and were then deposited | chemical rock |
| a natural, solid substance that has a definite chemical composition and physical structure. | mineral |
| melted rock within the Earth | magma |
| a rock formed when magma or lava cools and hardens | igneous rock |
| magma that reaches the Earth's surface | lava |
| an igneous rock that forms from magma and cools slowly underground so the mineral crystal grains grow larger. | intrusive rock |
| a type of igneous rock that forms from lava that cools quickly on the Earth's surface and the mineral crystals grains are very small. | extrusive rock |
| the process when igneous rock cools and hardens. | crystallization |
| a type of rock that forms from materials at the Earth's surface and will usually have stripes or layers of different colors. | sedimentary rock |