A bat emits short pulses of high-frequency sound and detects the echoes.
a) In what way would the echoes from large and small insects compare if they were the same distance from the bat?
b) In what way would the echo from an insect flying toward the bat differ from that of an insect flying away from the bat?
The Attempt at a Solution
a) absolutely no clue. maybe more returning sound waves from a larger creature?
b) possibly something about the doppler effect?