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Unit 4 Review
Vocabulary
Term | Definition |
---|---|
cemented | sticking together |
canyon | formed by water or river breaking rocks and carrying the sediments away |
delta | formed when a river or water slows down and deposits sediments |
u-shaped valley | formed by ice or a glacier breaking down rocks and carrying sediments away |
sand dune | formed by wind depositing sand |
fossil fuels | coal, oil, and natural gas |
nonrenewable | cannot be made again during our lifetime |
renewable | can be made in a short amount of time |
nonrenewable resources | coal, oil, and natural gas are this type of resource |
renewable resources | the sun, wind, water, and plants are this type of resource |
coal | formed from dead plants in a swamp with time, heat, and pressure |
oil and natural gas | formed from dead tiny ocean organisms with time, heat, and pressure |
weathering | wind, water, or ice breaking down rocks |
erosion | wind, water, or ice moving sediments |
deposition | wind, water, or ice dropping sediments |
sediments | tiny pieces of rock |
sedimentary rock | layers of sediments compacted and cemented together |
compaction | pressure |
fast changes | earthquakes, landslides, and volcanoes cause this type of changes to the Earth's surface |
slow changes | wind, water, and ice cause this type of changes to the Earth's surface |
fossils | the remains of once living organisms found in sedimentary rok |