Practice Uses Of Multiple Reflection Of Sound (11.3.3) - Sound

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6 sample questions

Question 1.
What is an echo?
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Think about shouting in a canyon.
Question 2.
Name a device that uses the reflection of sound.
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This device helps amplify your voice.
3Question 3.
What phenomenon occurs when you shout towards a wall and hear your voice again?
- Reverberation
- Echo
- Reflection
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It's like a sound 'bounce back'.
4Question 4.
True or False: Stethoscopes only record sound without amplifying it.
- True
- False
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Think about how doctors hear heartbeats.
Question 5.
If an echo is heard 1.5 seconds after the sound is produced, how far away is the reflecting surface?
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Remember, sound goes there and back.
Question 6.
Design a simple experiment to demonstrate sound reflection using a device.
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Use varying lengths to observe changes in echo time.

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