1) What happens when a guitar string is plucked? a) It breaks b) It vibrates c) It becomes louder d) It stops moving 2) Which tool is used to measure the loudness of a sound? a) Microphone b) Amplifier c) Sound level meter d) Loudspeaker 3) If a sound is high-pitched, it means: a) The sound is very quiet b) The sound has a fast vibration c) The sound is very soft d) The sound is low 4) Which of these is used to make sound louder? a) Ear defenders b) Amplifier c) Silencer d) Muffle 5) A loudspeaker is used to: a) Protect ears from noise b) Change sound into electrical signals c) Play sound so people can hear d) Reduce the noise 6) Which of these helps to protect your ears from loud sounds? a) Microphone b) Ear defenders c) Loudspeaker d) Amplifier 7) The unit of measuring sound is: a) Meter b) Hertz c) Decibel (dB) d) Watt 8) Which word means to make sound quieter? a) Vibrate b) Muffle c) Amplify d) Pluck

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