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12. What type of wave occurs when the individual particles of a medium vibrate back and forth in the direction in which the waves travel? A. Longitudinal wave C. Transverse wave B. Electromagnetic wave D. Longitudinal & Transverse waves 13. What property of sound depends on the amplitude? A Frequency B. Loudness C. Pitch D. Timbre 14. As the frequency of sound gets higher, what happens to pitch? A. It gets louder C. It gets softer. B. It gets higher. D. It gets lower. 15. When you j3rk the rope up and down, what types of waves are produced? A. Transverse and Mechanical waves C. Longitudinal and Transverse waves B. Longitudinal and Mechanical waves D. Transverse and Electromagnetic waves 16. Which of the following situation/s produce/s waves? A. Lamp that brightens the room C. Strumming the strings of the guitar B. Throwing a stone into a lake D. all of these 17. What part in our throat vibrate when we talk or make any sound? A. esophagus B. epiglotis C. vocal chords D. wind pipe 18. Which of the following air temperatures does sound travel fastest? A. 18 oc B. 25 OC C. 30 oc D. 34 oc 19. Which of the following arrangement of media is the speed of sound increasing? A. Air, metal, water C. Metal, alcohol, air B. Air, water, metal D. Wood, water, air
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