Earth-Sun Relationships & Incoming Solar Radiation
Terms to Learn are in BOLD in the outline below.
Topic Outline:
Earth Movements
- Rotation
- Revolution
- Perihelion
- Aphelion
Seasons
- Tilt of Earth's axis
- Solstices
- Summer solstice
- Winter solstice
- Equinoxes
- Vernal
- Autumnal
Solar Energy
- Energy from sun – electromagnetic waves
- Insolation
- Ultraviolet waves
- Visible light
- Infrared
- Short-wave radiation
Arrival of heat energy
- Absorption
- Reflection
- Scattering
- Transmission
- Greenhouse effect
Heating of Atmosphere
- Heat budget
When you are finished with this topic, you should be able to answer these questions:
- What is the difference between perihelion and aphelion?
- What time of the year is the earth closest to the sun?
- What causes the seasons on earth?
- What is insolation and into which category does most of the earth's incoming solar radiation fall?
- What happens to the heat/light energy as it enters the atmosphere?
- What is the "greenhouse effect"?