Some light bulbs convert electricity into light and heat energy.
Heat energy is the amount of energy in a substance.
Some light bulbs convert electricity into light and the amount of energy in a substance.
some light bulbs convert electricity into light and the amount of what?

(a) energy in a substance
(b) hydrogen and oxygen
(c) It decreases
(d) matter vibrating
(e) Inches or fractions of inches.
(f) reducing acid rain
(g) harmful substances
(h) Males and females