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Sound Unit 4th
Sound Unit Study Guide
Question | Answer |
---|---|
The vibration that you can hear | Sound |
The area where air is pushed together is called | compression |
Sound waves move out in what from a vibrating object | all directions |
The farther you are from the source of a sound, the what the sound will be | softer |
The greatest distance that the water rises from tits rest position is called what? | Amplitude |
What is the distance in a straight line from one place on a ripple to the same place on the next ripple? | Wave Length |
The peaks and valleys of a wave stand for the areas of what and what pressure in a sound wave. | High and Low |
The amplitude or tallness of a wave stands for the what of a sound. | loudness |
What is a measure of the amount of sound energy reaching your ears | Loudness |
A sound's what is a measure of how high or low it is | pitch |
The faster the vibrations the what the pitch | higher |
Pitch is related to what | wavelength |
The longer the wavelength the what the sound you hear | lower |
Two ways you can change the pitch of vibrating object is to change the what or the what of the object | length or the thickness |
The speed at which sound wave travels is called what? | Speed of Sound |
Sound travels through all three states of matter, but travels the fastest through which state? | Solid |
A sound reflection is called what? | Echo |
To get a clear echo, the sound waves need to bounce off of a what what surface? | Smooth, Flat |
When a plane is flying faster than the speed of sound, all of the sound waves are pushed together into one strong wave called what | shock wave |
The sound from this wave is loud "boom-boom" and is called a what? | Sonic Boom |