1. Shortwave solar (radiant) energy waves enter the atmosphere from the sun.
2. Other solar energy waves make it to the earth's surface.
3. When solar energy waves hit the earth's surface, they slow down and form longer heat(thermal) energy waves.
4. Some solar energy waves reflect off of clouds and greenhouse gasses and return to space.
5. These longer heat energy waves have trouble getting back out into space through the greenhouse gasses.
6. Heat trapped in the atmosphere warms the planet.