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Water Erosion AD
6th Grade
| Question | Answer |
|---|---|
| runoff | all the remaining water that moves over Earth's surface; when it flows in a thin layer over the land, it may cause a type of erosion called sheet erosion |
| rill | a tiny groove in soil made by flowing water |
| gully | a large channel in soil formed by erosion |
| stream | a channel through which water is continually flowing downhill |
| river | a large stream |
| tributary | a stream that flows into a larger stream |
| drainage basin | the land area from which a river and its tributaries collect their water |
| divide | a ridge of land that separates one drainage basin or watershed from another |
| flood plain | a broad, flat valley through which a river flows |
| meander | a looping curved formed in a river as it winds through its flood plain |
| oxbow lake | the cresent-shaped, cutoff body of water that remains after a river carves a new channel |
| alluvial fan | a wide, sloping deposit of sediment formed where a stream leaves a mountain range |
| delta | a landform made of sediment that is deposited where a river flows into an ocean or lake |
| groundwater | water that fills the cracks and pores in underground soil and rock layers |
| stalactite | a calcite deposit that hangs from a roof of a cave |
| stalagmite | a cone-shaped calcite deposit that builds up from the floor of a cave |
| karst topography | a type of landscape in rainy regions where there is limestone near the surface, characterized by caverns, sinkholes, and valleys |
| What is the major agent of the erosion that has shaped Earth's land surface? | moving water |
| What joins together to form a larger channel callled streams? | gullies |
| What reduces runoff by absorbing water and holding soil in place? | vegetation(e.g. grasses, shrubs, trees) |