During a sporting event, a referee uses a whistle to alert the teams to start and stop playing. What causes the sound from the referee's whistle to travel in all directions?
vibrations on the ground vibrations of the air seismic waves light waves
Question: During a sporting event, a referee uses a whistle to alert the teams to start and stop playing. What causes the sound from the referee's whistle to travel in all directions?
A. vibrations on the ground
B. vibrations of the air
C. seismic waves
D. light waves
Answer: