Starter quiz
- What is an echo?
- When a person repeats a word over and over again
- When sound waves reflect back so a sound is heard more than once ✓
- When sound waves refract from a surface
- When a sound wave is absorbed into the air so it can be heard for a longer time
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- The material or substance that a wave is travelling through is called the wave ______.
- 'medium' ✓
- A wave has a frequency of 2 Hz and a wavelength of 10 m. What is the wave speed?
- 0.2 m/s
- 5 m/s
- 12 m/s
- 20 m/s ✓
- 100 m/s
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- The time taken for one oscillation is called the ______ of a wave.
- 'period' ✓
- Which one of these does not describe the wavelength of a wave?
- the distance from peak to trough ✓
- the distance from one peak to the next peak
- the distance from one trough to the next trough
- the distance from one part of a wave to the same part of the next wave
- the distance travelled by a wave during one period
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- Which word means a result is close to the true value?
- precise
- repeatable
- reproducible
- accurate ✓
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