Cette leçon contient 20 diapositives, avec diapositives de texte.
Éléments de cette leçon
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=frequency⋅wavelength
Slide 11 - Diapositive
v=f⋅λ
wavespeed=frequency⋅wavelength
Slide 12 - Diapositive
v=f⋅λ
wavespeed=frequency⋅wavelength
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=f⋅λ
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.
