What type of energy do filaments use to illuminate?
energy nektar fibers cacti burn copper Heat two
A B C D E F G H
Conventional light bulbs generate light by heating a filament.
Filaments use heat energy to illuminate
What type of energy do filaments use to illuminate? (A) energy (B) nektar (C) fibers (D) cacti (E) burn (F) copper (G) Heat (H) two