MCQs: An example of wind instrument is
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MCQs: To shape a metal
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MCQs: The height of a wave is known as
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MCQs: Ultrasound is used instead of x-rays because x-rays can
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MCQs: In water the speed of sound is
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MCQs: An example of 'percussion' is
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MCQs: The number of sound waves sent per second is known as
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MCQs: Sound travels faster in liquids than air because
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MCQs: Echoes are useful for bats because through it bats can detect
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MCQs: The sound of a whistle is
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MCQs: The depth of the sea or ocean is calculated by a
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MCQs: Bats produce sounds with
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MCQs: A reflected sound is known as
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MCQs: Rapid backward and forward movements are known as
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MCQs: 'Dolphins' can capture their prey using
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MCQs: When sound travels, the air molecules vibrate
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MCQs: The highest level of frequency which human ear can detect is
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MCQs: Sound travels fastest in
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MCQs: A hand bell stimulates the
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MCQs: Two similar string instruments are
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