1. Climate Change

2. Earth Is a Greenhouse Planet
Earths temperature:
Earth’s distance from the sun
Changes in the energy output of the sun
The presence of carbon dioxide in the atmosphere
Gases
Allow sunlight to penetrate atmosphere
Trap reradiated energy from earth
Greenhouse effect: radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere

3. Vehicle as a greenhouse
A car has a greenhouse gas effect
Glass windows transmit visible and a small amount of UV from the sun, which is absorbed by the cars interior, which is emitted as long wave radiation
Long wave radiation is trapped inside the car

4. What are the the energy input and outputs?
Show how outgoing radiation is accounted for from incoming radiation (show calculations)
What part of the energy balance keeps earth warm?
Source: Data from Climate Change-State of knowledge. October Office of Science and Technology Policy, Washington, D.C.

5. Changes in Average Global Temperatures
1884
2006
Violin representation

6. Melting sea ice
Declining Sea Ice
Melting ice 2