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Understanding Earth's Weathering and Erosion Processes

Explore the gradual breakdown of rocks on Earth's surface over time, the movement of sediment, and the deposition of eroded materials. Discover the types of rocks, such as igneous, sedimentary, and metamorphic, and learn about the rock cycle and the importance of resources.

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Understanding Earth's Weathering and Erosion Processes

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  1. Unit 4 Vocab

  2. weathering the breaking down of rocks (over a long period of time) on Earth’s surface into smaller pieces

  3. erosion the process of moving sediment from one place to another can happen quickly

  4. deposition the dropping or settling of eroded materials

  5. sediment very small pieces of rock, sand, and silt carried by water

  6. mineral a nonliving solid that has a crystal form

  7. rock a solid substance made up of one or more minerals

  8. igneous rock a type of rock that forms from melted rock that cools and hardens found near volcanos

  9. sedimentary rock • a type of rock that forms when layers of sediment are pressed together • only rock that has fossils

  10. metamorphic rock • type of rock that forms when heat and pressure change an existing rock • found in mountains or deep inside Earth

  11. rock cycle the sequence of processes that change rocks from one type to another over long periods of time

  12. fossil the remains or traces of a plant or animal that lived long ago

  13. resource any material that can be used to satisfy a need

  14. renewable resources • a resource that can be replaced within a reasonable amount of time • Examples: sunlight, water, wind, trees

  15. nonrenewable resources • a resource that, once used, cannot be replaced in a reasonable amount of time • Examples: fossil fuels such as oil and natural gas, soil

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