question: The type of material through which mechanical waves pass through changes what?
choices.text: trucks and cars melanin content their color their flavor travel amount of heat their beams their speed
choices.label: A B C D E F G H
fact2: Sound Sound waves are mechanical waves.
combinedfact: the type of material through which mechanical waves pass change the speed at which they travel
formatted_question: The type of material through which mechanical waves pass through changes what? (A) trucks and cars (B) melanin content (C) their color (D) their flavor (E) travel (F) amount of heat (G) their beams (H) their speed