Sound Exam PDF

Final Score Sound Exam Name Class Date 1 1. What is sound made of? Chemical reactions generating noise. Light waves traveling through space. Vibrations in a medium (like air or water). Elec...

Final Score Sound Exam Name Class Date 1 1. What is sound made of? Chemical reactions generating noise. Light waves traveling through space. Vibrations in a medium (like air or water). Electromagnetic radiation in a vacuum. 1 2. How does sound travel fastest? Through empty space without any medium. Through gases like air and helium. Through solids such as metal or wood. Through liquids like oil and water.  1 3. What unit measures sound intensity? Hertz Liters Meters Decibels 1 4. Which is a characteristic of high-frequency sounds? They have a higher pitch than low frequencies. They are always harmful. They travel shorter distances. They are quieter than low frequencies.  1 5. What happens when sound waves pass from air to water? Refraction occurs, changing the sound's speed and direction. Wavelength stays the same in different mediums. Frequency changes without speed changes. Reflection occurs at the water's surface. 1 6. What defines the height of a sound wave? Refraction Wavelength Frequency Amplitude  1 7. What is the distance between two sound wave crests called? Reflection describes waves bouncing off surfaces. Frequency is how often waves pass a point. Amplitude measures loudness and sound quality. Wavelength measures the distance between crests or troughs. 1 8. What term describes how many waves pass a point per second? Amplitude Refraction Frequency Wavelength  1 9. Which example best illustrates sound reflection? Talking directly into a phone. Sound traveling in a vacuum. Echo from a canyon wall. Music from a loudspeaker. 1 10. What is one common use of sound reflection? Turning music on. Making sounds louder. Reducing sound in rooms. Sonar in underwater navigation.  1 11. What is sound diffraction? Absorption of sound waves Bending of sound waves around obstacles. Amplification of sound waves Reflection of sound waves 1 12. Diffraction causes sound to: Stop completely Travel in different directions after hitting an object. Change frequency only Increase in loudness  1 13. What is sound attenuation? Speed of sound in different materials. The pitch of a sound wave. Increase in sound intensity over distance. Reduction in sound intensity as it travels through a medium. 1 14. What happens to sound energy in attenuation? Sound energy becomes louder over time. Sound energy turns into light energy. Sound energy doubles as it travels further. Sound energy is absorbed or scattered as it travels.  1 15. What type of wave is sound? Surface wave in water. Longitudinal wave. Transverse wave only. Still wave without movement. 1 16. Which wave type has crests and troughs? Sound waves Transverse waves Standing waves Longitudinal waves  0 17. Sound waves are an example of which type of wave? Transverse waves Light waves Longitudinal waves Radio waves 1 18. Which wave type can move through solids and fluids? Transverse waves. Electromagnetic waves. Longitudinal waves. Surface waves.  1 19. What is an example of a transverse wave? Pressure waves. Light waves. Sound waves. Water waves. 1 20. What determines the pitch of a sound wave? Phase of the sound wave. Amplitude of the wave. Wavelength of the sound wave. Frequency of the sound wave.  1 21. What describes the position of a sound wave cycle? Frequency of the wave. Phase of the sound wave. Amplitude of the wave. Wavelength of the wave. 1 22. How are frequency and wavelength related? They are unrelated. Wavelength determines frequency only. Inversely proportional in wave behavior. Directly related in all cases.  1 23. What does amplitude measure in a sound wave? The duration of the sound wave. The speed of sound waves. The frequency of the wave pattern. The height of the wave from rest position. 1 24. What does pitch refer to in sound? The speed of sound waves. The color of the sound wave. The loudness of the sound produced. How high or low a sound is perceived.  1 25. Higher amplitude results in which of the following? Lower pitches from sound waves. Fewer vibrations in the sound. Louder sounds Shorter wavelengths in sound. 1 26. How are amplitude and pitch different? Both refer to sound volume and quality. Amplitude relates to loudness, pitch relates to frequency. Both measure sound duration. Amplitude is about sound distance.  1 27. What is sound timbre primarily associated with? Loudness of the sound heard. Pitch of a musical note. Duration of the sound wave. Quality or color of sound produced by instruments. 0 28. Timbre is influenced by what element of sound? Only the loudness of sound. Only the base frequency of sound. Only the sound's duration. Harmonics and overtones present in the sound.  1 29. What is the typical sound level in a home? 70-80 decibels 30-40 decibels 10-20 decibels 50-60 decibels 1 30. Concerts generally reach what decibel level? 30-50 decibels 50-70 decibels 150-160 decibels 100-120 decibels  1 31. What is the sound level of a jet engine? 110-120 decibels 130-140 decibels 90-100 decibels 60-70 decibels 1 32. What type of sound wave is an ultrasound? High-frequency sound wave above human hearing range. Inaudible sound with no medical uses. Low-frequency sound wave below human hearing range. Sound wave below 20 Hz frequency.  1 33. In which field is ultrasound commonly used? Studying sound pollution in the environment. Analyzing chemical reactions in a lab. Detecting earthquakes and ground vibrations. Medical imaging to visualize internal body structures. 1 34. What is infrasound? Sound waves below human hearing range. Ultrasound used for medical purposes. High-frequency sound waves used in physics. Sound waves above 20 kHz frequency.  1 35. Which of these is a use of infrasound? Visualizing blood flow in arteries. Monitoring volcanic activity and detecting storms. Pregnancy imaging and sonar technology. Studying atomic structures in chemistry.