Lesson 6

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Slide 1: Slide

SoundMiddelbare schoolhavo, vwoLeerjaar 2

This lesson contains 20 slides, with text slides.

Items in this lesson

Slide 1 - Slide

Q1) What is the wavelength of this wave?

One block is 2 cm long

Slide 2 - Slide

Q2) What is the amplitude of this wave?

One block is 2 cm long

Slide 3 - Slide

Q3) What is the frequency of this wave?

1 second

Slide 4 - Slide

Q1) What is the wavelength of this wave?

One block is 2 cm long

8 cm

Slide 5 - Slide

Q2) What is the amplitude of this wave?

One block is 2 cm long

4,5 cm

Slide 6 - Slide

This lesson

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

Slide 7 - Slide

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 - Slide

Discussing the homework

The worksheet
The video

Slide 9 - Slide

Properties of a wave

Wavlength
Frequency
Amplitude
Wave speed
Period

Slide 10 - Slide

w a v e s p e e d = f r e q u e n c y \cdot w a v e l e n g t h

Slide 11 - Slide

v = f \cdot λ

w a v e s p e e d = f r e q u e n c y \cdot w a v e l e n g t h

Slide 12 - Slide

v = f \cdot λ

w a v e s p e e d = f r e q u e n c y \cdot w a v e l e n g t h

v: speed (m/s)
f: frequency (Hz)
λ: Wavelength (m)

Slide 13 - Slide

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 - Slide

F r e q u e n c y = \frac{​ 1 ​ ​}{​ p e r i o d ​}

Slide 15 - Slide

f = \frac{​ 1 ​ ​}{​ T ​}

F r e q u e n c y = \frac{​ 1 ​ ​}{​ p e r i o d ​}

Slide 16 - Slide

f = \frac{​ 1 ​ ​}{​ T ​}

F r e q u e n c y = \frac{​ 1 ​ ​}{​ p e r i o d ​}

f: Frequency (Hz)
T: Period (s)

Slide 17 - Slide

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 - Slide

v = f \cdot λ

f = \frac{​ 1 ​ ​}{​ T ​}

Slide 19 - Slide

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 - Slide

Lesson 6

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