1. Meteorology

2. Composition of the Atmosphere

3. 1. The main gases of the atmosphere were….
Carbon dioxide
Sulfur dioxide
Water vapor
Nitrogen

4. 2. Oxygen entered the atmosphere by…
Photosynthesis
Sunlight breaking apart the H2O into H and O

5. 3. The gas that is most abundant in the atmosphere
(probably not what you think it is!!!!)
Nitrogen

6. 4. Three ways heat moves…
Conduction (through touch)
Radiation (through light waves)
Convection (heat rises, cools and sinks, repeat)

7. 5. Explain how these are used to heat water.
Conduction- Burner heats the pan and the pan heats the water through touch
Convection – Hot bottom of pan rises, cooler water takes it place. Hot top, cools cuz it’s away from the heat source, sinks. Repeats.
Radiation – light waves from the burner will heat the solid/liquid objects close by.

8. Troposphere
Closest to Earth’s surface
0 to 16 km
Temperature DECREASES with altitude
Weather occurs here
Contains 80% of total mass of atmosphere

9. Stratosphere
Above the troposphere
16 to 50 km
Temperature INCREASES with altitude
The OZONE layer is here

10. Mesosphere
Above the stratosphere
50 to 90 km
Temperature DECREASES with altitude
Coldest layer

11. Thermosphere
Highest layer
90 km into space
Temperature INCREASES (lots of sun!)
Layers of molecules – N, O, He, H
Ionosphere (90 to 500 km) and Exosphere (500km to space)