question: What causes refraction of sound waves?
choices.text: Decreasing the volume It's inherited from genes islets of Langerhans a surface not sterilized Differences in speed Speed of light not constant trucks and cars Natural magnetism
choices.label: A B C D E F G H
fact2: Refraction is the effect on a wave when there are changes in a medium.
combinedfact: Differences in the speed of sound cause sound waves to be refracted when passing between different media
formatted_question: What causes refraction of sound waves? (A) Decreasing the volume (B) It's inherited from genes (C) islets of Langerhans (D) a surface not sterilized (E) Differences in speed (F) Speed of light not constant (G) trucks and cars (H) Natural magnetism