1. Insolation
In = incoming Sol = solar Ation = radiation Insolation – radiation from the sun

2. We receive only one 2 billionth (1/2,000,000,000) of all the sun’s energy!
All areas of the Earth get the same amount of sunlight!
Why are some area’s cold and others hot?

3. Some area’s have greater intensity then others.
Intensity is the strength of sunlight which is correlated with Earth’s surface temperature.
As intensity goes up, so does temperature.

4. Angle of sunlight affects insolation.
Angle of Insolation depends on the angle of the sun ray’s hitting the Earth.
The greater the angle, the greater the temperature.
0 o is cold – 90 0 is hot

5. What affects the angle of sunlight?
Time of day
Think of your shadow
Higher angle = small shadow = higher temps
Latitude
Distance north of south of the equator
Tilt of the Earth
Higher latitude = Less intense
Low latitude = more intense
Equator is most intense