Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. Name the two different types of waves.
   • The two types of waves are called transverse and longitudinal.
2. What are the ripples on a water surface examples of?
   • The ripples on a water surface are examples of transverse waves.
3. What types of waves show areas of compression and rarefaction.
   • The type of waves that show compression and rarefaction are called longitudinal waves.
4. What type of wave is a sound wave?
   • Sounds waves are examples of longitudinal waves.
5. What is the difference between longitudinal and transverse waves.
   • In a transverse waves, the oscillations (vibrations) are at right angles to the direction of travel and Energy transfer. In longitudinal waves, the oscillations are along the same direction as the direction of travel and Energy transfer.
6. Do the waves in air or the wave in the water travel?
   • For both ripples on a water surface and sound waves in air, it is the wave and not the water or air itself that travels.
7. How can you describe wave motion?
   • Wave motion can be described in terms of amplitude.
8. How can you describe wave motion?
   • Wave motion can be described in terms of wavelength.
9. How can you describe wave motion?
   • Wave motion can be described in terms of frequency.
10. How can you describe wave motion?
    • Wave motion can be described in terms of period?
11. What is meant by amplitude of wave.
    • The amplitude of a wave is the maximum displacement of a point on a wave away from its undisturbed position.
12. What is meant by wavelength?
    • The wavelength of a wave is the distance from a point on one wave to the equivalent point on the adjacent
13. What is the frequency of a wave?
    • The frequency of a wave is the number of waves passing a point each second.
14. What does period and frequency equal to?
    • Period = 1 / freqency T = 1 / f
15. What is wave speed?
    • The wave speed is the speed at which the Energy is transferred (or the wave moves) through the medium.
16. What is the equation that links the frequency, wave speed and wavelength?
    • Wave speed = frequency x wavelength; v = f x λ
17. Identify amplitude and wavelength from given diagrams
    • identify amplitude and wavelength from given diagrams
18. What method could be used to measure the speed of sound waves in air.
    • Over a long distance time how long it takes an observed sound to be heard. Use an oscilliscope.