1. INSOLATION Incoming Solar Radiation Portion of sun’s output of electromagnetic radiation that is received by earth.

2. Rays of the sun, Sunlight, Light, Hatpit, Liwanag

3. Light – 44% Infrared (heat) – 48% Ultraviolet – 7%

4. Factors Affecting Absorption and Reflection Of Insolation 1. Angle incidence The higher the angle of incidence, more insolation is absorbed, the hotter it is.

5. 2. Latitude Factor The higher the latitude, the lower the angle, less energy is absorbed.

6. 3. Time Of the Day The higher the sun in the sky, the higher the angle of incidence, the hotter it is.

7. 4. Seasonal Factor Summer, Winter, Fall and Spring

8. 5. Surface Characteristics Darker Color and coarse texture – absorb more heat. Lighter color and smooth – reflects more heat.

9. 6. Atmosphere Factor Reflection Scattering Absorption condensation Radiation