Pass Check: Waves, Light & Sound
Waves transfer energy through vibrations without transferring matter.
Wavelength
The distance from one point on a wave to the same point on the next wave, measured in metres.
Frequency
The number of complete waves passing a point per second, measured in hertz (Hz).
Amplitude
The maximum displacement of a point on a wave from its undisturbed position.
Refraction
The change in direction and speed of a wave as it passes from one medium into another of different density.
Quick check
Mixed quiz
1. State the approximate range of frequencies audible to humans.
2. State whether sound waves are transverse or longitudinal.
3. State what happens to light when it reflects off a plane mirror.
4. State one danger of ultraviolet radiation to humans.
5. Which of these is a transverse wave?
6. State the difference between transverse and longitudinal waves.
7. Calculate the distance to a cliff if an echo is heard 1.2 s after a shout, with sound travelling at 340 m/s.
8. State what ultrasound is.