Answer:

1. A lightbulb is connected to an outlet that has a source of electricity. The electrical energy is converted into light energy to allow the bulb to glow.

2. Torches, oil lamps, candles, and gas lamps all are combustion types of lamps. Light comes from the flame that is the result of a reaction between oxygen and the vapor of a solid fuel in the case of candles.

3. Light is a form of energy created by the movement of electrons. Different wavelengths appear as different colors, although most wavelengths are not visible to the human eye.