Lesson 5 — 5.4 + 5.5 – Properties of waves

• Sound
• Middelbare school
• havo, vwo
• Leerjaar 2

5,4 + 5,5 — Properties of waves

This lesson

• What is a wave? — Understanding waves
  
• The properties of waves
•  

Learning goals

• Name the four properties of a wave.

• Describe how the amplitude of a sound wave influences the sound it produces.

• Describe how the frequency of a sound wave influences the sound it produces.

• Be able to read waveforms correctly.

• Explain how instruments get their distinct sound.
  

What is a wave?

• A disturbance that gets passed on through a medium
  

A wave

A wave

How many waves do we see here?

A wave

How many waves do we see here?

1 Wave

A wave

How many waves do we see here?

The properties of a wave

• Frequency
  
• Amplitude
  

Tone generator

Oscilloscope

The properties of a wave

• Frequency
  
• Amplitude

•  Wavelength
• Wave speed

Tone generator

Oscilloscope

The properties of a wave

Tone generator

Oscilloscope

Frequency

•  The amount of waves per second — Unit: Hertz (Hz) — influences the tone of a sound

Amplitude

•  The distance from the center of the wave to the top or the bottom in meters (m) — influences the loudness of a sound

Wavelength

•  The length of one wave in meters (m)

Wave speed

•  The speed of the wave in meters per second (m/s)

Homework

• Watch the following video.
  
• Make a summary of it 
• hand your summary in on Itslearning