Chapter 5 The Changing Surface of Earth LANDFORMS Basic types: 1.Plains 2.Plateaus 3.Mountains.
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Transcript of Chapter 5 The Changing Surface of Earth LANDFORMS Basic types: 1.Plains 2.Plateaus 3.Mountains.
Chapter 5 The Changing Surface of Earth
LANDFORMS Basic types:
1.Plains 2.Plateaus
3.Mountains
1. Plains • Large, relatively flat areas covering
much of the country
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
Interior Plainsfrom Appalachian Mts. to Rocky Mts.from Gulf Plain north into Canada
- Great Plains - Central Lowland
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
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
Folded - Mountains
layers of rock that have been pushed and caused to fold
Appalachian Mts.
Upwarped
pushed straight up by deep forces from within
Rocky Mts.
Fault-block
Tilted and pushed, separated by faults (cracks along which rock moves)
Fault-block continued
VolcanicMolten rock is forced through the crust to the surface, and builds up
Ash blows through onto the surface and builds up
Volcanic continuedSunset Crater, Arizona - a cinder cone
Devil's Tower, Wyo., a Volcanic Neck