Transcript Chapter 5 The Changing Surface of Earth

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 Plains
plains along coasts
called 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 Plains
from Appalachian Mts. to Rocky Mts.
from Gulf Plain north into Canada
- Great Plains
- Central Lowland
Plateaus
relatively flat, raised areas
(raised by geologic forces)
easy to tell from surrounding area
they are clearly higher in elevation
Colorado Plateau
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
Appalachian Mts.
layers of rock that have been pushed
and caused to fold
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
Volcanic
Molten rock is forced through the crust to the surface,
and builds up
Ash blows through onto the surface and builds up
Volcanic continued
Sunset Crater, Arizona - a cinder cone
Devil's Tower, Wyo., a Volcanic Neck