The Nature of Sound The blending of pitches through interference produces an instrument’s A. Sound quality B. Amplitude C. Echoes D. Resonance The blending of pitches through interference produces an instrument’s A. Sound quality B. Amplitude C. Echoes D. Resonance Longitudinal wave caused by vibrations and carried through a medium A. Sound wave B. Standing wave C. Overtones D. Tinnitus Longitudinal wave caused by vibrations and carried through a medium A. Sound wave B. Standing wave C. Overtones D. Tinnitus An echo is most likely to result when sound hits a surface that is A. Bumpy and lumpy B. Smooth and hard C. Smooth and soft D. Bumpy and soft An echo is most likely to result when sound hits a surface that is A. Bumpy and lumpy B. Smooth and hard C. Smooth and soft D. Bumpy and soft The motion of either the listener or the source of a sound causes A. Resonance B. Shock waves C. Echolocation D. The Doppler effect The motion of either the listener or the source of a sound causes A. Resonance B. Shock waves C. Echolocation D. The Doppler effect The amplitude of a sound’s waves determines the sound’s A. Pitch B. Sound quality C. Resonance D. Loudness The amplitude of a sound’s waves determines the sound’s A. Pitch B. Sound quality C. Resonance D. Loudness Frequencies two or more times the fundamental frequency A. Amplitude B. Echolocation C. Overtones D. Decibel Frequencies two or more times the fundamental frequency A. Amplitude B. Echolocation C. Overtones D. Decibel The frequency of a sound wave determines A. The pitch of the sound B. The loudness of the sound C. The sound quality D. The type of interference The frequency of a sound wave determines A. The pitch of the sound B. The loudness of the sound C. The sound quality D. The type of interference The medium through which sound waves travel affects the A. The number of waves per second. B. The amplitude of the waves. C. Speed of sound. D. The sound quality. The medium through which sound waves travel affects the A. The number of waves per second. B. The amplitude of the waves. C. Speed of sound. D. The sound quality. Unit for measuring loudness A. Decibel B. Interference C. Resonance D. Over tones Unit for measuring loudness A. Decibel B. Interference C. Resonance D. Over tones Which statement about sound is NOT true? A. Sound waves cannot travel through a vacuum. B. Air particles travel with sound waves. C. If the bells ring at school on a Saturday, they still make sound waves. D. Air particles vibrate along the path of a sound wave. Which statement about sound is NOT true? A. Sound waves cannot travel through a vacuum. B. Air particles travel with sound waves. C. If the bells ring at school on a Saturday, they still make sound waves. D. Air particles vibrate along the path of a sound wave. Sounds with frequencies higher than 20,000 Hz A. Result from standing waves. B. Create destructive interference. C. Are ultrasonic sounds. D. Have low frequencies. Sounds with frequencies higher than 20,000 Hz A. Result from standing waves. B. Create destructive interference. C. Are ultrasonic sounds. D. Have low frequencies. A person experiences a sonic boom when A. Sound waves overlap by constructive interference. B. An airplane breaks the sound barrier. C. Overtones are created. D. A shock wave reaches the ears. A person experiences a sonic boom when A. Sound waves overlap by constructive interference. B. An airplane breaks the sound barrier. C. Overtones are created. D. A shock wave reaches the ears. Vibrates when struck A. Sound wave B. Overtones C. Percussion instrument D. Tinnitus Vibrates when struck A. Sound wave B. Overtones C. Percussion instrument D. Tinnitus Results from long-term exposure to loud sounds A. Tinnitus B. Resonance C. Overtones D. Echolocation Results from long-term exposure to loud sounds A. Tinnitus B. Resonance C. Overtones D. Echolocation The use of reflected sound waves to find food or other objects A. Sound wave B. Resonance C. Decibel D. Echolocation The use of reflected sound waves to find food or other objects A. Sound wave B. Resonance C. Decibel D. Echolocation Vibration that causes standing waves inside its air column A. Standing wave B. Woodwind instrument C. Amplitude D. Tinnitus Vibration that causes standing waves inside its air column A. Standing wave B. Woodwind instrument C. Amplitude D. Tinnitus Occurs when two sound waves overlap each other A. Echolocation B. Overtones C. Interference D. Resonance Occurs when two sound waves overlap each other A. Echolocation B. Overtones C. Interference D. Resonance A pattern of vibration that looks like a wave is a rest A. Frequency B. Standing wave C. Resonance D. Decibel A pattern of vibration that looks like a wave is a rest A. Frequency B. Standing wave C. Resonance D. Decibel When the sound produced by one object causes another object to vibrate A. Resonance B. Sound wave C. Echolocation D. Oscilloscope When the sound produced by one object causes another object to vibrate A. Resonance B. Sound wave C. Echolocation D. Oscilloscope D. ___ Movement of liquid inside cochlea causes hair cells to bend. ___ The vibrating stirrup causes the oval window to vibrate. ___ Electrical signals are sent to the brain due to stimulation of nerves by bending hair cells. ___ Sounds waves cause the eardrum to vibrate. D _B_ Movement of liquid inside cochlea causes hair cells to bend. _C_ The vibrating stirrup causes the oval window to vibrate. _D_ Electrical signals are sent to the brain due to stimulation of nerves by bending hair cells. _A_ Sounds waves cause the eardrum to vibrate. What is the amplitude? 12 m What is the amplitude? 12 m The amplitude is 6 meters. Why?? What is the wavelength? 12 m What is the wavelength? 12 m The wavelength is 10 meters. Frequency If the wavelength of the previous wave increased to 14 meters, and the wave speed remained the same, what would happen to the frequency? Why? A. Increase = directly related B. Decrease = inversely related C. Stay the same = not related Frequency If the wavelength of the previous wave increased to 14 meters, and the wave speed remained the same, what would happen to the frequency? Why? A. Increase = directly related B. Decrease = inversely related C. Stay the same = not related **Like a see-saw, if you raise one object, you lower the other. Frequency and wavelength are inversely related. (Chapter 1) Doppler Effect If you are running at top speed in one direction, and a fire engine races past you in the other direction, will you still notice the Doppler effect? Why or why not? Find the Fish! Mr. Neu is in his boat, sending out sonar waves from his fish finder. If the wave is traveling at 500 m/s and returns to the boat in 8 seconds, how far away are the fish, and did he catch one?? Find the Fish! Mr. Neu is in his boat, sending out sonar waves from his fish finder. If the wave is traveling at 500 m/s and returns to the boat in 8 seconds, how far away are the fish, and did he catch one?? Equation: (500 x 8) ÷ 2 = 2000 meters OR 500 x (8 ÷ 2) = 2000 meters Did he catch one? It’s anyone’s guess…. .