Question

Earth Science

Choose the statement about the Doppler Effect that is true
It occurs when a wave source moves towards an observer.
It occurs when an observer moves towards a wave source.
It occurs when a wave source moves away from an observer.
It occurs when an observer moves away from a wave source.
All the above are true

Answer 1

all the above are true

Step-by-step explanation:

Answer 2

yes all above are true well done my