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| Question | Answer |
| What type of waves are sound waves? Light Transverse Longitudinal | Sound waves are longitudinal waves. They vibrate in the same direction of travel. |
| Which do sound waves travel fastest through? Solid Gas Liquid | Sound waves travels fastest through solids because the particles are closest together. |
| What are the areas where particles are pulled further apart in sound waves called? Compression Vacuum Rarefaction | The areas where particles are pulled further apart in sound waves are called areas of rarefaction. |
| What is the name given to the range above human hearing? Infrasound Ultrasound Infrared | Sounds above the human range of hearing are called ultrasound. This is about 20,000 hertz. |
| What is the speed of sound in air? 300 000 km/s 340 m/s 340 miles per hour | The speed of sound in air is about 340 m/s. |
| Which of these is the correct order for the speed of waves starting with the fastest? Sound, light, water Light, water, sound Light, sound, water | Waves travel fastest in light, then sound and finally water. |
| Which of these is the correct equation for speed? speed = distance ÷ time speed = distance × time distance = speed × time | The correct equation for speed is speed = distance ÷ time. |
| Where is SONAR used? In hospitals to find broken bones In fishing boats to find fish In hospitals to look at unborn babies | SONAR is used in fishing boats to identify shoals of fish to catch. |
| What are the units of frequency? Joules Decibels Hertz | The units of frequency are hertz. |
| What is the correct scientific term for pitch? Frequency Amplitude Wavelength | Frequency is the correct scientific term for pitch. |
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