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- 1. Multiple Choice
What is this?
microphone
amplifier
headphone
loudspeaker
- 2. Multiple Choice
What is this?
amplifier
microphone
headphone
loudspeaker
- 3. Multiple Choice
The microphone, the amplifier and the loudspeaker make a ___. It make the sound ___
system sound/ louder
system sound/ softer
sound system/ louder
sound system/ softer
- 4. Multiple Choice
What kind of variable are they?
control variable
independent variable
dependent variable
none of them
- 5. Multiple Choice
Mike are testing the loudness of clock sound through some materials. The materials consist of wood, paper, orange juice, carbonic gas in a balloon. The materials are
control variable
dependent variable
independent variable
none of the above
- 6. Multiple Choice
What is the best material for sound to travel through?
iron
oxygen
water
carbonic gas
- 7. Open Ended
Rearrange the letters to get a correct word:
fumefl
- 8. Open Ended
Rearrange the letters to get a correct word:
lisencre
- 9. Open Ended
Arrange the words to have a correct sentence:
wear/ in/ place./Workers/ear/sound/defenders/muffle/to/noisy
- 10. Multiple Choice
We fit ___ to cars, trucks and motorbike to muffle the sounds of their engines.
earmuff
silencer
ear defender
microphone
- 11. Open Ended
Why do we put our fingers around our mouth when we shout?
- 12. Open Ended
Why We Hear The Louder When You Cup Your Palm Over Your Ear?
- 13. Multiple Choice
What tool does NOT make the sound louder?
microphone
loudspeaker
amplifier
earmuff
- 14. Multiple Choice
What material can muffle sound the best
plastic wrap
wood
paper
cotton box
- 15. Multiple Choice
What is this?
microphone
loudspeaker
amplifier
headphone
- Answer choicesTagsAnswer choicesTags