Starter quiz
Sound waves must travel through a ______ to our ears to be heard.- 'medium' ✓
- Sounds travelling through a solid can be heard ...
- muffled. ✓
- quieter. ✓
- louder and clearer. ✓
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What vibrates inside our ear to help us to hear sounds?- eardrum ✓
- skin
- ear canal
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- Large vibrations create ______ sounds.
- 'loud' ✓
- Small vibrations cause ______ sounds.
- 'quiet' ✓
- Which of the following statements are true?
- Volume of sound can be changed. ✓
- Volume of sound cannot be changed.
- You can only change the volume of sound on a remote control.
- The volume of all sounds can be changed to louder or quieter. ✓
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Exit quiz
- Scientists compare different sounds accurately by measuring their volume by ...
- using their ears.
- using special equipment to measure the volume. ✓
- asking someone which sound is louder.
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What do data loggers do?- Change the weather over time.
- Control the temperature over time.
- Monitor and record changes to the environment over time. ✓
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The volume of sound is measured in ______.- 'decibels' ✓
- What part of a data logger helps us to measure volume?
- the ears
- the sound sensor ✓
- the microphone
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What is the role of a sound engineer at a music concert?- To monitor the sound to ensure it is at a safe decibel level. ✓
- To make sure the music is really loud.
- To make sure everyone is singing.
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Match each sound to its approximate decibel level.- Speaking normally⇔60 decibels ✓
- Clapping loudly⇔80 decibels ✓
- Whispering⇔30 decibels ✓
Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- We can compare different sounds by measuring their volume.
- Data loggers are electronic devices which monitor and record changes in the environment over time.
- The volume of a sound in decibels (dB) can be measured using a data logger.
- Scientists and engineers take accurate measurements to compare and control the volume of sounds.
Common misconception
Pupils may think that volume of sound cannot be measured, as they may not have encountered equipment or the units of measurement for doing so.
Allow opportunities to measure the volume of a range of everyday sounds so that pupils become familiar with decibel levels.
Keywords
Compare - We can compare objects by looking at what is the same about them and what is different.
Sounds - We hear sounds with our ears.
Volume - The volume of a sound is how loud or quiet the sound is.
Data logger - A data logger is an electronic device that monitors and records changes in the environment over time.
Decibels - The volume of a sound is measured in decibels (dB).
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