Question

However, had it been a real sound, the sound's pitch would have been increased by the Doppler Effect, since the Falcon was moving _____ the source of the sound.
perpendicular to

away from

towards

at the same speed as

Answer 1

The correct answer is: Towards

Explanation:
Doppler Effect is the apparent change in the frequency of a wave caused by the relative motion between the source of the wave and the observer. As the observer gets closer to the source, that observer will observe or sense the higher frequency of the wave (emitting by the source). Frequency in the case of sound waves is called the "sound's pitch." Therefore, the sound's pitch will increase if the Falcon moves towards the source of the sound. Hence, the correct option is "towards."

Answer 2

Towards. The Doppler Effect tells us that as an object moves toward the source of sound, the pitch the object feels will increase; when the object moves away, the pitch decreases. In order for the pitch to increase, the falcon must be moving towards the source of sound.