1. Geology

2. Objectives

Distinguishbetween the four parts of the Earth

Describethe layers of the Earth

Categorizethe three different rock types

Evaluatethe rock cycle

3. Four Parts of the Earth

Atmosphere

Solid Earth

Hydrosphere

Biosphere

4. Atmosphere

From Earths surface to outer space

• 50 miles(Highline to Rocky Mountain National Park)

• Composition

• • 80% Nitrogen

• • 20% oxygen

• • Other gases

5. Atmosphere 6. Solid Earth 7. Hydrosphere

Water

of planet surface

Where?

• Ocean (97%)

• • 80% in the southern part of Earth

• Glaciers (2%)

• Ground Water (0.6%)

• Lakes, streams (0.4%)

8. Biosphere

Life

9. Layers of the Solid Earth

Core

Mantle

Crust

10. Core

Very big(1400 miles radius from center)

Lots of iron and nickel

Hot like the sun

Enormous pressure (14 times higher)

Liquid/Solid

11. Mantle

Most of Earth (82%)

Rock (1800 miles deep)(Highline to state of Maine)

Hot enough to melt most rocks

High pressure (3 times higher)

Solid with some fluid movement at surface

12. Crust

Surface (5 miles thick)

Cool

Hard

13. Three types of rock

Igneous Rock

Sedimentary Rock

Metamorphic Rock

14. Igneous Rock

Made from cooled lava

(was completely liquid before cooled)

15. Sedimentary Rock

• • Made from ground up pieces of rock pressed together

16. Metamorphic Rock

Made by crushing and heating rock inside Earth

17. Rock Cycle 18. Quiz