PleAse I just need matching

Matching. Match the term on the left with the definition on the right, by writing the letter for the definition in the space provided to the right of each term. a. Beats A longitudinal wave of pressure in air. b. Doppler Effect .When oscillations match an objects natural frequency c. Harmonics An oscillation in the volume of sound that occurs when two similar frequencies are heard at the same time. d Loudness The perceived musical note heard by a listener. Related to frequency of sound wave. e Natural Frequency The perceived intensity of sound. Related to the amplitude of the sound wave. f. Pitch The higher frequencies that create standing waves for the same conditions (same string or same column of air). . When an object moves faster than the speed of sound and the combined g. Resonance energies from multiple waves reaches an observer all at once, resulting in a great change in pressure h Sonic The lowest frequency at which an object will vibrate when disturbed. This is Boom a function of the material, size and structure of the object. When the perceived frequency of a waves is different from the frequency of J. Sound the source because of relative motion between the observer and the source. nestions, showing all work