what passes through materials at different speeds?
waves vehicle flying animals mercury trucks silk Mohs
A B C D E F G H
Sound, a type of energy, is produced by vibrations and travels in waves.
the type of material through which waves passes changes the speed at which waves move
what passes through materials at different speeds? (A) waves (B) vehicle (C) flying (D) animals (E) mercury (F) trucks (G) silk (H) Mohs