1. The Earth and Its Forces Geography2.1

2. Goals…  Is the Earth’s surface made up of more water or land?  Describe how the Earth’s surface is shaped by internal forces.  Describe two extreme events caused by internal forces.

3. Facts about Earth  1 of 8 planets that orbit the sun  Unique b/c it supports life  75% water

4. Earth’s 5 Layers 1.) Inner Core: hot, solid iron and nickel 2.) Outer Core: liquid, melted metal

5. 3.) Mantle: largest of the Earth’s layers, has melted rock called magma 4.) Crust: thin, outer layer that floats on top of the mantle, is the part on which we live 5.) Atmosphere: layer of gases that surrounds the Earth

6. Continents  7 Large landmasses

7. Tectonic Plates  Large, rigid pieces of the Earth’s crust  Plates move about 4” a year  Can cause earthquakes or volcanic eruptions

8. Goals…  Is the Earth’s surface made up of more water or land?  Describe how the Earth’s surface is shaped by internal forces.  Describe two extreme events caused by internal forces.