Fact 1: Alight bulb converts electrical energy into light energy when it is turned on.

Fact 2: Most of the energy a light bulb uses turns into heat.

Given the two facts above, answer the question "What is converted to heat in a light bulb?" with the following options: 
- Firecrackers
 - electricity
 - peachleaf willow
 - an object
 - layers of fat
 - an electron lens
 - sunlight
 - our nearest star


 

  electricity       