chapter 7, lesson 2 - landforms
TRANSCRIPT
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Chapter 7, Lesson 2
Landforms
runofftributary
watershedsedimentmeander
flood plaindelta
water gapcanyonvalleydune
landslide
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runoff – water that runs off Earth’s solid surface
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tributary – “feeder” streams; small streams and rivers that “feed” into other
streams and rivers forming larger streams and rivers
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watershed – the entire area from which water is drained
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sediment – pieces of material; sediment can range in size from boulders to
gravel, sand, silt and dissolved materials
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meander – bends, or “S” shapes in a river cause by river currents slowing down in
flat land and dropping sediment
Click here to learn more about rivers and coasts!
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flood plain – flat landscape near rivers; the rivers flood the land from time to time
and create very fertile soil.
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mouth (of river) – where a river empties into the ocean; river currents slow when
they hit the ocean and drop sediment
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delta – a fan-shaped piece of land that forms from sediment dropped at the
mouth of a river
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water gap – a rare, narrow, steep-walled canyon created as water cut through hard
rock
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valley – formed when small channels are deepened and widened by erosion
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canyon – a deep, V-shaped valley that is usually created as a result of both water cutting into earth and geological forces
pushing earth upward
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dune – sand hill created by wind erosion; found in deserts or at the beach
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landslide – when water saturates the land and makes soil loosen and fall; gravity can create landslides, too