16. What is the relationship of temperature to the speed of sound? A Equal B. No relationship C. Directly proportional D. Inversely proportional
17. Sound travels faster through warm materials than cold materials because A. warm particles move slowly B. gas particles are packed tightly C. warm particles are moving quickly D. sound does not travel faster through a warm substance
18. When the direction of a wave changes as it passes from one medium to another, it is called A. Density B. Echo C. Reflection D. Refraction
19. What is the speed of sound in dry air at O OC? A 31 m/s B. 331 m/s C. 3000 m/s D. 300000 m/s
20. How much is the increase in the speed of sound in the air for every 1C0 increase in temperature? A. 0.06 m/s B. 0.6 m/s C.6 m/s D. 60 m/s
17. Sound travels faster through warm materials than cold materials because A. warm particles move slowly B. gas particles are packed tightly C. warm particles are moving quickly D. sound does not travel faster through a warm substance
18. When the direction of a wave changes as it passes from one medium to another, it is called A. Density B. Echo C. Reflection D. Refraction
19. What is the speed of sound in dry air at O OC? A 31 m/s B. 331 m/s C. 3000 m/s D. 300000 m/s
20. How much is the increase in the speed of sound in the air for every 1C0 increase in temperature? A. 0.06 m/s B. 0.6 m/s C.6 m/s D. 60 m/s
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Answer:
16.B
17.A
18.C
19.A
20B
Explanation:
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Answer:
16) D. inversely proportional
17)A. warm particles move slowly
18).!3+3+$