chapter 5 the changing surface of earth
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LANDFORMS. Basic types: Plains Plateaus Mountains. Chapter 5 The Changing Surface of Earth. 1. Plains • Large, relatively flat areas covering much of the country. Coastal Plains. plains along coasts. called lowlands because of low elevation (height above/below sea level). - PowerPoint PPT PresentationTRANSCRIPT
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Chapter 5 The Changing Surface of Earth
LANDFORMS Basic types:
1.Plains 2.Plateaus
3.Mountains
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1. Plains • Large, relatively flat areas covering
much of the country
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Coastal Plainsplains along coastscalled lowlands because of low elevation (height above/below sea level)
marshes, swamps, low hills
Gulf coastal plain and Atlantic coastal plain
Atlantic coastal plain
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Interior Plainsfrom Appalachian Mts. to Rocky Mts.from Gulf Plain north into Canada
- Great Plains - Central Lowland
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Plateausrelatively flat, raised areas
(raised by geologic forces)
Colorado Plateau
easy to tell from surrounding area
they are clearly higher in elevation
Colorado Plateau from the Air
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Mountains Rise high above surrounding area.
We will look at Four types:
1. Folded 2. Upwarped 3. Fault-block 4. Volcanic
Long's Peak, Colorado
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Folded - Mountains
layers of rock that have been pushed and caused to fold
Appalachian Mts.
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Upwarped
pushed straight up by deep forces from within
Rocky Mts.
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Fault-block
Tilted and pushed, separated by faults (cracks along which rock moves)
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Fault-block continued
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VolcanicMolten rock is forced through the crust to the surface, and builds up
Ash blows through onto the surface and builds up
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Volcanic continuedSunset Crater, Arizona - a cinder cone
Devil's Tower, Wyo., a Volcanic Neck