Answered

When air is blown across the top of an open

water bottle, air molecules in the bottle vibrate

at a particular frequency and sound is produced.

This phenomenon is called

(1) diffraction (3) resonance

(2) refraction (4) the Doppler effect

Verified Answer :

When air is blown across the top of an open water bottle, air molecules in the bottle vibrate at a particular frequency and sound is produced in a process called "refraction". 

emilyzhouc

Answer:

resonance

Explanation:

Resonance is when the frequency matches another objects natural frequency causing it to vibrate.

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