Choose the letter of the correct answer sheet of paper.
1. Which of the following factors does the speed of sound depend? A. density B. elasticity C. temperature D. all of the above
2. An echo occurs when a sound wave is a A. absorbed B. reflected C. refracted D. transmitted as the temperature increases?
3. What happens to the speed of sou A. constant B. decreases C. increases D. cannot be determined
4. Which phenomenon explains why sound is heard at longer distances at night than in day? A. echolocation B. reflection C. refraction D. reverberation
5. How fast does sound travel if the air temperature is 20 °C? A. 334 m/s B. 340 m/s C. 343 m/s D. 345 m/s
1. Which of the following factors does the speed of sound depend? A. density B. elasticity C. temperature D. all of the above
2. An echo occurs when a sound wave is a A. absorbed B. reflected C. refracted D. transmitted as the temperature increases?
3. What happens to the speed of sou A. constant B. decreases C. increases D. cannot be determined
4. Which phenomenon explains why sound is heard at longer distances at night than in day? A. echolocation B. reflection C. refraction D. reverberation
5. How fast does sound travel if the air temperature is 20 °C? A. 334 m/s B. 340 m/s C. 343 m/s D. 345 m/s
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Answer:
1.B
2.A
3.B
4.C
5.D
Explanation:
source:lexi
1:A
2:B
3:what do you mean?
4:A
5:A but the correct is 332m/s