Earth-Sun Relationships & Incoming Solar Radiation


Terms to Learn are in BOLD in the outline below.


Topic Outline:

Earth Movements

  1. Rotation
  2. Revolution
    1. Perihelion
    2. Aphelion


  1. Tilt of Earth's axis
  2. Solstices
    1. Summer solstice
    2. Winter solstice
  3. Equinoxes
    1. Vernal
    2. Autumnal

Solar Energy

  1. Energy from sun – electromagnetic waves
  2. Insolation
    1. Ultraviolet waves
    2. Visible light
    3. Infrared
    4. Short-wave radiation

Arrival of heat energy

  1. Absorption
  2. Reflection
  3. Scattering
  4. Transmission
    1. Greenhouse effect

Heating of Atmosphere

  1. Heat budget


When you are finished with this topic, you should be able to answer these questions:

  1. What is the difference between perihelion and aphelion?
  2. What time of the year is the earth closest to the sun?
  3. What causes the seasons on earth?
  4. What is insolation and into which category does most of the earth's incoming solar radiation fall?
  5. What happens to the heat/light energy as it enters the atmosphere?
  6. What is the "greenhouse effect"?