Alerting devices inform a person when they convert electrical energy into what
sound batteries air heat energy action photons waves
A B C D E F G H
Alerting devices inform a person when the doorbell rings, alarm clock sounds, or telephone rings.
Alerting devices inform a person when they convert electrical energy into sound
Alerting devices inform a person when they convert electrical energy into what (A) sound (B) batteries (C) air (D) heat (E) energy (F) action (G) photons (H) waves