Sunlight is a type of electromagnetic radiation emitted by the Sun, specifically infrared, visible, and ultraviolet light.
- In the tropics there is a net energy surplus because the amount of sunlight absorbed is larger than the amount of heat radiated. In the polar regions, however, there is an annual energy deficit because the amount of heat radiated to space is larger than the amount of absorbed sunlight.
- The delicate balance between the amount of heat received from the sun and the heat radiated back into space allows the planet to support life.
- Solar energy is the main source of light on Earth.
- Having fewer hours of daylight reduces the amount of solar energy you receive in a day.
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