rp ripple tank

Cards (27)

  • What should you be able to describe by the end of this video?
    How to use a ripple tank
  • What quantities can be measured using a ripple tank, as described in the video?
    Wavelength, frequency, and speed of water waves
  • Is using a ripple tank to measure wavelength, frequency, and speed of water waves a required practical?
    Yes
  • What is a ripple tank used for?
    To observe the features of water waves
  • What is a ripple tank?
    A shallow tray of water
  • What is placed in the water of the ripple tank?
    A vibrating bar
  • To what is the vibrating bar connected?
    A power pack
  • What does the vibrating bar do when connected to a power pack?
    It creates waves across the water's surface
  • What is located above the ripple tank?
    A lamp
  • What is located below the ripple tank?
    A sheet of white paper
  • Why is a lamp and white paper used with a ripple tank?
    To produce an image of the waves
  • What is the easiest way to record the waves for analysis?
    Using a mobile phone
  • Why is it useful to record the waves using a mobile phone?
    It allows playback at different speeds
  • What should you place on the paper to measure the wavelength?
    A ruler
  • After placing the ruler, what should you do with the recorded image to measure the wavelength accurately?
    Freeze the image
  • Why measure the distance across multiple wavelengths instead of just one?
    To improve measurement accuracy
  • If 10 wavelengths measure 26 centimeters, what is the length of one wavelength in meters?
    0.026 meters
  • What is frequency?
    Number of waves passing a point each second
  • Why is it more accurate to count waves over 10 seconds instead of 1?
    To reduce errors
  • What else do you need to record alongside the waves to measure the frequency accurately?
    A timer
  • What is the unit of frequency?
    Hertz
  • If you count 24 waves passing a point in 10 seconds, what is the frequency?
    2.4 Hertz
  • What is the wave equation?
    Wave speed = frequency x wavelength
  • If the frequency is 2.4 Hz and the wavelength is 0.026 meters, what is the wave speed?
    0.0624 meters per second
  • How can you calculate wave speed by measuring distance and time?
    Speed = distance traveled / time taken
  • Why might you get slightly different results using the wave equation and the direct measurement method?
    Due to measurement errors
  • Where can you find more questions on this practical?
    In the revision workbook