Lesson 6

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Slide 1: Diapositive
SoundMiddelbare schoolhavo, vwoLeerjaar 2

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Slide 1 - Diapositive

Q1) What is the wavelength of this wave?
One block is 2 cm long

Slide 2 - Diapositive

Q2) What is the amplitude of this wave?
One block is 2 cm long

Slide 3 - Diapositive

Q3) What is the frequency of this wave?
1 second

Slide 4 - Diapositive

 Q1) What is the wavelength of this wave?
One block is 2 cm long
8 cm

Slide 5 - Diapositive

Q2) What is the amplitude of this wave?
One block is 2 cm long
4,5 cm

Slide 6 - Diapositive

This lesson
  • Reading wave forms.
  • Discussing the homework.
  • Calculating wave speed and frequency.
  • The distinct sound of a musical instrument.

Slide 7 - Diapositive

Learning goals
  • Name the formula for calculating frequency and be able to apply it in calculations.

  • Name the formula for wave speed and be able to apply it in calculations.

  •  Apply these two new formula's in beginner and more advanced calculations.

  • Explain how instruments get their distinct sound.



    Slide 8 - Diapositive

    Discussing the homework
    • The worksheet
    • The video 

    Slide 9 - Diapositive

    Properties of a wave
    • Wavlength
    • Frequency
    • Amplitude
    • Wave speed
    • Period

    Slide 10 - Diapositive

    wavespeed=frequencywavelength

    Slide 11 - Diapositive

    v=fλ
    wavespeed=frequencywavelength

    Slide 12 - Diapositive

    v=fλ
    wavespeed=frequencywavelength
    • v: speed (m/s)
    • f: frequency (Hz)
    • λ: Wavelength (m)

    Slide 13 - Diapositive

    Practice exercises
    • A sound wave travels through a steel plate. The sound wave has a frequency of 300 Hz and a wavelength of 17 meters. Calculate the speed of sound in steel.

    •  A ripple in a pond has a frequency of 2 Hz and a speed of 0,8 m/s. Calculate the wavelength of this wave.

    Slide 14 - Diapositive

    Frequency=period1

    Slide 15 - Diapositive

    f=T1
    Frequency=period1

    Slide 16 - Diapositive

    f=T1
    Frequency=period1
    • f: Frequency (Hz)
    • T: Period (s)

    Slide 17 - Diapositive

    Practice exercises
    •  A wave has a period of 0,25 seconds. Calculate the frequency of this wave

    • A wave has a frequency of 440 Hz. Calculate the period of this wave.

    • A wave has a period of 5 seconds. Calculate the frequency of this wave.

    Slide 18 - Diapositive

    v=fλ
    f=T1

    Slide 19 - Diapositive

    Learning goals
    • Name the formula for calculating frequency and be able to apply it in calculations.

    • Name the formula for wave speed and be able to apply it in calculations.

    •  Apply these two new formula's in beginner and more advanced calculations.

    • Explain how instruments get their distinct sound.



      Slide 20 - Diapositive