Welcome to your Sound Waves(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. Loudness measures the sound energy reaching the ear per second and depends on the amplitude of the sound wave. What is the unit used to measure the loudness of sound? Meter/second Hertz Decibel Second2. If the frequency of the wave is lowered, what happens to the speed of the sound wave? All of the above Sound wave speeds up Sound wave slows down Sound wave speed does not change3. If the speed of a wave is 380 m/s and its frequency is 1900 Hz, then the wavelength of the wave will be: 20 m 0.2 m 2 m 200 m4. Another term for a sound reflection off of a wall or other object through which a sound wave cannot pass is Echo Reverb Amplitude Vibration5. What is Intensity of Sound? It is inversely proportional to the square of the distance of point from the source. Both None of the above It is directly proportional to the square of amplitude of vibration, square of frequency and density of the medium.6. The type of wave shown is a __________ wave. Longitudinal Sound Transverse Light7. The loudness or softness of a sound is _____________ Pitch Volume Sound8. A key of mechanical piano is first struck gently and then struck again but much harder this time. What kind of change in sound will you observe in the second case: Both loudness and pitch will remain unaffected Sound will be louder and the pitch will also be higher Sound will be louder but the pitch will not be different Sound will be louder but the pitch will be lower9. In this animation, what type of wave is shown? Longitudinal Refracted Transverse Light10. Which of the following is not a type of electromagnetic wave? Radio waves Gamma rays Red light Sound11. The speed of the vibration is called ___________________. Pitch Frequency Rhythm12. Sound waves are what type of wave? A transvers wave A tidal wave A surface wave A longitudinal wave13. You must have seen the doctor checking the sounds produced in the chest or heart beat of a patient using a medical instrument called Stethoscope. On what principle does this Stethoscope work? None of these Wave motion Multiple reflections Multiple refractions14. The Hertz (Hz) is the unit of measure for which wave property? Frequency Speed Amplitude Wavelength15. When a motor boat in a sea travels faster than sound, then waves just like shock-waves are produced on the surface of water. These waves are called .............. Bow waves Doppler's waves Shock waves Refracted waves16. What type of waves are Sound Waves? Latitudinal waves Longitudinal waves Longitudinal waves Latitudinal mechanical waves17. Which of the following can produce longitudinal as well as transverse waves under different conditions? Slinky None of these Bats Tuning fork18. How loud are noises in space? It's space, everyone knows there are no sounds in space. Never been there, I wouldn't know. Really loud, nothing out there to stop the sound waves Very quiet with a few noises, almost like walking in the forest.19. Before the main shock waves, the earthquake produces the characteristic sound waves which some animals like rhinoceros can hear. Can you guess the kind of sound waves produced here? None of these Ultrasonic sounds Infrasonic sounds Audible Sounds20. A movement back and forth that produces sound is called _____________ Air Sound Vibration21. _________________ is the highness or lowness of a sound. Pitch Volume Tension22. Which of the following statement is or are correct about longitudinal mechanical waves? The longitudinal mechanical waves which lie in the frequency range 20 Hz to 20000 Hz are called audible or sound waves. The longitudinal mechanical waves having frequencies less than 20 Hz are called infrasonic. The longitudinal mechanical waves having frequencies greater than 20,000 Hz are called ultrasonic waves All of the above are correct23. Sound does not travel in space because What? No air, so there is no medium to travel through. Too dark Too many asteroids24. The higher the amplitude, the __________________ the sound. Higher Quieter Louder Lower25. Sound travels best through ___________________. Solid Air Water26 out of 25Time is Up!