IG Phy – Sound(I)
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Question 1 of 15
1. Question
1 point(s)Sound waves are produced in air by any vibrating object.
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Question 2 of 15
2. Question
1 point(s)Sound waves are transverse waves.
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Question 3 of 15
3. Question
1 point(s)The speed of sound in air is approximately 330 m/s to 350 m/s.
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Question 4 of 15
4. Question
1 point(s)Human ears can hear frequencies between 20 Hz and 20,000 Hz.
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Question 5 of 15
5. Question
1 point(s)Dogs can hear frequencies lower than 20,000 Hz.
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Question 6 of 15
6. Question
1 point(s)Elephants can hear high frequency sounds.
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Question 7 of 15
7. Question
1 point(s)Ultrasound refers to sound frequencies greater than 20,000 Hz.
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Question 8 of 15
8. Question
1 point(s)Sound waves can be reflected, refracted, and diffracted.
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Question 9 of 15
9. Question
1 point(s)Sound travels faster in gases than in solids.
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Question 10 of 15
10. Question
1 point(s)In a compression region, air pressure is slightly higher than normal.
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Question 11 of 15
11. Question
1 point(s)In a rarefaction region, air molecules are closer together.
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Question 12 of 15
12. Question
1 point(s)The speed of sound in water is about 1400 m/s.
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Question 13 of 15
13. Question
1 point(s)Higher frequency sounds will have longer times between adjacent peaks.
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Question 14 of 15
14. Question
1 point(s)Loud sounds have large amplitude.
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Question 15 of 15
15. Question
1 point(s)The pitch of sound in diagram (a) is higher than in diagram (b).
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