# Lesson 7— Loudness, amplitude and oscilloscopes — Original

The properties
of a wave
1 / 38
Slide 1: Tekstslide
Natuurkunde / ScheikundeMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 38 slides, met tekstslides en 1 video.

## Onderdelen in deze les

The properties
of a wave

#### Slide 1 -Tekstslide

This lesson

• The properties of a wave
• An oscilloscope
• Amplification

#### Slide 2 -Tekstslide

Learning goals
• Describe the three properties of wave
• Know what determines the loudness of a sound
• Explain what an oscilloscope does
• Explain how amplification works

#### Slide 3 -Tekstslide

The properties of a wave

#### Slide 4 -Tekstslide

A wave
A repeating pattern

#### Slide 5 -Tekstslide

How many waves are there in the image below?

#### Slide 6 -Tekstslide

How many waves are there in the image below?

#### Slide 7 -Tekstslide

A wave has three properties

• Wavelength
• Amplitude
• Frequency

#### Slide 10 -Video

What is meant by...
•  Wavelength
• Amplitude
• Frequency

#### Slide 11 -Tekstslide

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

Amplitude
The distance from the center of the wave to the highest or lowest point (in cm, m, km)

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

#### Slide 12 -Tekstslide

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

#### Slide 13 -Tekstslide

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

#### Slide 14 -Tekstslide

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

#### Slide 15 -Tekstslide

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

#### Slide 16 -Tekstslide

What is the frequency of this wave?
1 second

#### Slide 17 -Tekstslide

What is the frequency of this wave?
1 second
5 Hz
5 waves/ second

An oscilloscope

#### Slide 19 -Tekstslide

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

#### Slide 20 -Tekstslide

Which wave create a louder sound?
Wave 1
Wave 2

#### Slide 21 -Tekstslide

Which wave create a louder sound?
Wave 1
Wave 2

#### Slide 22 -Tekstslide

Working independently
Do: workbook exercises 5.4
Do: yellow block exercises 5.4

#### Slide 23 -Tekstslide

Learning goals
• Describe the three properties of wave
• Know what determines the loudness of a sound
• Explain what an oscilloscope does
• Explain how amplification works

#### Slide 25 -Tekstslide

How many waves are there in the image below?

#### Slide 26 -Tekstslide

How many waves are there in the image below?
One wave

#### Slide 27 -Tekstslide

How many waves are there in the image below?

#### Slide 28 -Tekstslide

1b.) How many waves do you count in each of the following three pictures?
Image 2
Two waves

#### Slide 29 -Tekstslide

1c.) How many waves do you count in each of the following three pictures?
Image 3

#### Slide 30 -Tekstslide

1c.) How many waves do you count in each of the following three pictures?
Image 3
Image 2:
Four waves

#### Slide 31 -Tekstslide

2a.)  If one block is 2cm wide, what is the wave length of this wave?
Image 1

#### Slide 32 -Tekstslide

2a.)  If one block is 2cm wide, what is the wave length of this wave?
Image 1
Image 2:
16 cm

#### Slide 33 -Tekstslide

2b.)  If one block is 2cm wide, what is the wave length of this wave?
Image 2

#### Slide 34 -Tekstslide

2b.)  If one block is 2cm wide, what is the wave length of this wave?
Image 2
Image 2:
8 cm

#### Slide 35 -Tekstslide

2c.)  If one block is 2cm wide, what is the wave length of this wave?
Image 3
Image 2:
4 cm

#### Slide 36 -Tekstslide

3) Which of these two waves has a higher amplitude? Explain.
Image 1
Image 2

#### Slide 37 -Tekstslide

3) Which of these two waves has a higher amplitude? Explain.
Image 1
Image 2