2. Fossils  Fossils have been supporting various theories to support Plate Tectonics  There have been matching fossils founded in various countries  Radio Carbon Dating is used to determine how old fossils are

3. Radio Carbon Dating  Uses the decay of a C isotope to estimate the age of organic materials, such as wood and leather, up to about 58,000 to 62,000 years Before Present (BP, present defined as CE 1950

4. Layers of the Earth  There are 3 main parts:  Core  Mantle  Crust

5. Types of Heat Transfer  Radiation  Conduction  Convection

6. Volcanoes  BrainPop

7. Earth’s Systems  Biosphere: all living things  Geosphere: all rock  Hydrosphere: all water  Cryosphere: all ice  Atmosphere: all air

8. Human Impact on all of This…  Deforestation  Urbanization  Desertification  Erosion ( the bad kind)  Air and Water Quality  Flow of the Water

9. Atmosphere  Weather vs Climate  Earth’s systems interacts with each other to keep it in equilibrium  Cycling of water influences local weather patterns!  The Water Cycle!

10. Layers of the Atmosphere