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Unit Quiz

Sound waves

This quiz will help you to assess your learning of key concepts and knowledge in this unit.

Q1.What is sound caused by?

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Q2.What is the main difference between sound as a wave and light as a wave?

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Q3.What is an echo?

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Q4.What is the approximate speed of sound through air?

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Q5.Through which state of matter can sound travel through fastest and why?

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Q6.How fast is something travelling if it covers a distance of 300m in 12 seconds?

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Q7.What is the volume of a sound determined by?

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Q8.Which of the following surfaces should produce the best echo?

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Q9.Which of the following describes 'amplitude'?

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Q10.If a sound has a high pitch, what will the frequency and wavelength of the sound wave be like?

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Q11.In which state of matter will sound travel the slowest?

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Q12.Which of the following devices converts an electrical current into sound waves?

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Q13.How does ultrasound work in cleaning jewellery?

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Q14.How does ultrasound work in medical imaging?

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Q15.What is meant by the 'frequency' of a wave?

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Q16.What happens to the wavelength of a wave when the frequency is high?

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Q17.What is volume measured in?

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