1. Chapter 17 The Atmosphere Composition of the Atmosphere 78% - Nitrogen 21% - Oxygen 1% - Argon, CO 2, etc.

2. Water Cycle Evaporation & transpiration  Condensation  precipitation Water is neither created nor destroyed

5. Photosynthesis Respiration Plants! Take in CO 2, Water and sunlight to release O 2 Mammals!Take in O 2, water and food to release CO 2

6. 17.2 Movement of Heat in the Atmosphere Conduction Convection Radiation Direct contact Currents Transfer of heat through visible light (SUN!!!)

7. TemperatureThe measure of HEAT in the atmosphere

8. Structure of the Atmosphere Troposphere Stratosphere Mesosphere Thermosphere CFC’s are chlorofluorocarbons that EAT ozone! Where all weather occurs; where we live O 3 ….Ozone layer (protects us from UV light) CFC’s destroy Ozone! 3 rd layer Magnetic field (ionosphere) – Auroras!