1. Science 10 – The Sun Distributing the Heat
Energy from the sun radiates to the Earth and is absorbed unequally on the planet.

2. Why do some areas absorb more radiation than others?
Earth’s tilt on axis (obliquity)

3. Why do some areas absorb more radiation than others?
The shape of the rotation around earth (eccentricity)
Earth rotates around the sun in an oval shape

4. Why do some areas absorb more radiation than others?
Earth’s movement over 24 hours is pointing towards the north star at 23.5 degrees (precession)

5. Why do some areas absorb more radiation than others?
The angle of incidence – how the sun’s radiation hits the surface of earth

6. What do you mean?

7. Radiation and the Albedo effect
Ice, snow, clouds reflect Darker land absorbs

8. Albedo These are surface albedo measurements expressed as a percent.
What does it mean if the surface has a low percent albedo?

9. Albedo Continued

10. Radiation Balances

11. Think about it
If all of the radiation that made it to earth would leave 100%, what would the climate on earth be like?
What surfaces absorb most of the radiation? Are they man-made structures or are found commonly in nature? How would this play a role in understanding the climate change today?