Lesson 7— Loudness, amplitude and oscilloscopes — Online

The properties 
of a wave
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Slide 1: Tekstslide
Natuurkunde / ScheikundeMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 27 slides, met tekstslides en 1 video.

Onderdelen in deze les

The properties 
of a wave

Slide 1 - Tekstslide

Learning goals
  • Name and describe the three properties of a wave

  • Name what affects the loudness of a sound

  • Be able to read waves from an oscilloscope


Slide 2 - Tekstslide

The properties of a wave

Slide 3 - Tekstslide

A wave
A repeating pattern

Slide 4 - Tekstslide

How many waves are there in the image below?

Slide 5 - Tekstslide

How many waves are there in the image below?
2 Waves

Slide 6 - Tekstslide

A wave has three properties

Slide 7 - Tekstslide



  • Wavelength
  • Amplitude
  • Frequency

Slide 8 - Tekstslide

Slide 9 - Video

Exercise
Explain the three properties of a wave in your own words. Also name their unit.

  •  Wavelength
  • Amplitude
  • Frequency

Slide 10 - Tekstslide

Wavelength
The length of a wave (in cm, m, km)

Amplitude
The distance from the center of the wave to top or bottom (in cm, m, km)

Frequency
The amount of waves per second (in hertz, Hz)

Slide 11 - Tekstslide

One block is 2 cm long
wavelength
  •  8 cm

Amplitude
  •  2 cm

Frequency
  •  2 Hz

This snapshots has a duration of 1 second 

Slide 12 - Tekstslide

One block is 2 cm long
wavelength
  •  8 cm

Amplitude
  •  2 cm

Frequency
  •  2 Hz

This snapshots a duration of 1 second
This snapshots has a duration of 1 second 

Slide 13 - Tekstslide

(in cm, m, km)
One block is 2 cm long
wavelength
  •  8 cm

Amplitude
  •  2 cm

Frequency
  •  2 Hz

This snapshots a duration of 1 second
This snapshots has a duration of 1 second 

Slide 14 - Tekstslide

One block is 2 cm long
wavelength
  •  8 cm

Amplitude
  •  2 cm

Frequency
  •  2 Hz

This snapshots a duration of 1 second
2 Waves per second
This snapshots has a duration of 1 second 

Slide 15 - Tekstslide

Question 1 — How many waves are there in the image below?

Slide 16 - Tekstslide

Question 2 — How many waves are there in the image below?
4 Waves

Slide 17 - Tekstslide

Question 2
a) What is the wavelength the waves in this image?

b) What is the amplitude of these waves?

c) What is the frequency of this signal?
One block is 2 cm long
This snapshots has a duration of 1 second 

Slide 18 - Tekstslide

Question 3
a) Wave length:
3.2 Cm

b) Amplitude
1 cm

c) Frequency
5 Hz
One block is 2 cm long
This snapshots has a duration of 1 second 

Slide 19 - Tekstslide

Question 3
Which of the three properties of a wave affects the loudness of the sound it produces?
A) The frequency
B) The wavelength
C) The Amplitude

Slide 20 - Tekstslide

Question 4)
Which of the three properties of a wave affects the loudness of the sound it produces?
A) The frequency
B) The wavelength
C) The Amplitude

Slide 21 - Tekstslide

Question 4 — Which wave create a louder sound?
Wave 1
Wave 2

Slide 22 - Tekstslide

Question 5 — Which wave create a louder sound?
Wave 1
Wave 2

Slide 23 - Tekstslide

An oscilloscope

Slide 24 - Tekstslide

Amplification
The Amplitude of a wave...
...Determines the loudness of a sound

Slide 25 - Tekstslide

Working independently
Homework
Read: 5.5
Do: 5.4 The workbook exercises

Slide 26 - Tekstslide

Learning goals
  • Name and describe the three properties of a wave

  • Name what affects the loudness of a sound

  • Be able to read waves from an oscilloscope


Slide 27 - Tekstslide