Sound Test Review Back and forth movements of

Sound Test Review

Back and forth movements of matter are called Vibrations

. Let’s say you want to change the pitch of a string on your violin. If you want to make the pitch higher, will you tighten or loosen the string? Why? To make the pitch higher you will tighten the string because by tightening it you create greater tension and therefore higher frequency and pitch.

The amount of energy in a sound wave is the Intensity

. The region in a sound wave where there are fewer particles of matter. Air pressure is lower and does not push the particles together. Rarefaction

Loud or unpleasant sounds in the environment are NOISE POLLUTION

The disappearance of a sound wave into a surface is ______________. ABSORPTION

What can change the speed of sound? The material through which the sound travels, and the temperature of the material

A form of energy that travels through matter as waves is ___________. SOUND

The special sound produced by a musical instrument is called ___________. TIMBRE

The highness or lowness of a sound is called _____________. PITCH

What do the dots in the sound wave represent? Particles of matter

. Briefly describe the Doppler Effect. Give an example of it. The Change in frequency as one object passes another. Example: When an ambulance is far away the siren does not sound loud, but as the ambulance comes closer, the frequency and pitch increase. As the ambulance moves away, the frequency and pitch decreases.

The region in a sound wave where the particles of matter are pushed closely together. Air pressure is greater creating sound. COMPRESSION _________________.

Why are the dots closer together in compression, and further apart at rarefaction? Because air pressure is greater in a compression causing the matter to bounce more frequently, creating sound.

. The measurement of a frequency of a sound wave is a ______________. HERTZ

A sound wave that bounces from one surface to another is an ___________. ECHO

Compare the two notes. Which one has a higher pitch? What does this tell you about the frequency of the note? The higher the pitch, the higher the frequency. The lower the pitch, the lower the frequency.

. When there is a thunderstorm outside, why do you see the lightning before you hear the thunder? Because light travels faster than sound

Print this page and label each red blank with the following terms: trough, rarefaction, amplitude, crest, frequency, compression, wave length (See next page for answers)

Answer Key wavelength ion t c fa st e r c trough e rar n ssio e r p m co frequency amplitude

_________ is the description of how loud or soft a sound is Noise Pollution Volume Intensity Decibels Correct Answer Volume

The human voice produces sounds in a wide range of ______. Octaves Frequency Pitch Correct Answer Pitch

When you measure the loudness of a sound, you measure it in ________. Noise Pollution Volume Intensity Decibels Correct Answer Decibels

In vocal groups, high voices may sing a C at 528 hertz. The low voices sing a C at 132 hertz – two ______ lower Octaves Frequency Pitch Correct Answer Octaves

The ________ of a sound is a measure of the sound’s energy. Noise Pollution Volume Intensity Decibels Correct Answer Intensity

Someone with long, thick vocal cords may sing tones at an even lower ______, such as 110 hertz Octaves Frequency Pitch Correct Answer Frequency

Loud unpleasant sounds in the environment are called __________ Noise Pollution Volume Intensity Decibels Correct Answer Noise Pollution

What type of sound wave would a girl produce if she was screaming on the play ground? A. A large amplitude with a low frequency B. A small amplitude with a low frequency C. A large amplitude with a high frequency D. A small amplitude with a high frequency Correct Answer C

If someone yells, “Turn that down, ” the person means that you should A. Increase the amplitude B. Decrease the amplitude C. Increase the frequency D. Decrease the frequency Correct Answer B

Which sound would have the highest decibel level? A. Traffic on the freeway B. A whisper C. A rocket blasting off D. Sarah talking Correct Answer C

The part of a sound wave where the particles are pushed together is called the … A. B. C. D. rarefaction compression crest trough Correct Answer B

Which would be the best flooring used to absorb sound? A. concrete floor B. a marble floor C. a wooden floor D. a carpeted floor Correct Answer D

Sound travels the fastest through _____ A. air on a hot day B. a vacuum C. air on a cold day D. a metal bar Correct Answer D

What would happen to the pitch of a sound if the frequency of the wave increased? A. The pitch would go up B. The pitch would go down C. The pitch would not change D. The pitch would go up and down Correct Answer A

You did it!!!!! I hope you have enjoyed the Power. Point review. Go through the Power. Point multiple times to ensure that you are prepared! I wish you the best on your quiz! Mr. M