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