500
Which one matches the description of a sound closer to you?
(Hint: think about the 100, 200, 300, and 400 questions and answers)
A. Blue shift, high frequency, smaller wavelengths
B. Red shift, low frequency, bigger wavelengths
C. Blue shift, low frequency, smaller wavelengths
D. Red shift, high frequency, smaller wavelengths
D. Red shift, high frequency, smaller wavelengths