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3rd Grade Unit 4
| Definition | Term |
|---|---|
| the process by which decomposers break down dead material and waste into simpler substances | Decomposition |
| shaking of the Earth that is caused by the release of energy stored in the outermost layer of the Earth | Earthquake |
| the movement of weathered material by wind, water, or ice | Erosion |
| to suddenly become active through the release of lava, ash, and gases from a volcano | Erupt |
| a person who studies Earth’s rocks and minerals | Geologist |
| a physical structure on Earth that occurs naturally | Landform |
| large mass of soil and rock that suddenly moves down the side of a steep surface | Landslide |
| a picture, idea, or object that represents an object, a system, or a process and is used to help with understanding | Model |
| anything that people can use, such as minerals, water, plants, or soil, which comes from nature. | Natural Resource |
| a mixture of rock and mineral particles, organic matter, water, and air that forms on Earth’s surface by weathering of rock and the decomposition of plant and animal remains | Soil |
| an opening in the Earth’s surface through where lava can flow onto the surface during an eruption | Volcano |
| the breaking down and wearing away of rock (or other matter) | Weathering |
Created by:
Region18ESC
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