| A | B |
|---|
| absorption | attraction and retention of energy |
| active solar | system which uses solar heat absorption for later use |
| concave mirror | a reflective surface curved inward to gather and focus light to a point |
| heat exchanger | device used to transfer heat collected from one source to another |
| insolation | amount of solar energy received in an area over a period of time |
| passive solar | system which uses solar heat directly |
| photovoltaic cell | device that converts sunlight directly into electricity |
| silicon | a metalloid element used in photovoltaic cells |
| solar collector | device that absorbs energy from the sun and converts it to heat |
| solar energy | energy from the sun |
