You are standing near a railroad track and a train is moving toward you at 60 mph and blowing his horn.What will you notice as the train moves past you?
A) As the train approaches,the horn will sound lower in pitch than when it is moving away.
B) As the train approaches,the horn will sound higher in pitch than when it is moving away.
C) There will be no change in the pitch of the horn as it moves by.
D) The horn will get louder as the train moves away from me.
E) The horn will get quieter as the train moves toward me

Question

Quizplus · Accepted Answer

As the train approaches, the sound waves are compressed, making the horn sound higher in pitch. As it moves away, the waves are stretched, lowering the pitch. This is known as the Doppler effect.

You Are Standing near a Railroad Track and a Train