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TAsk 1 - Relationships
TAsk 1 - Relationships
There are some import relationships you need to know about when you start to investigate waves.
As you increase the frequency of a wave, the wavelength gets shorter.
As you decrease the frequency of the wave, the wavelength gets bigger.
The speed that a wave travels (its velocity), is determined by the material that the wave is travelling in.
See the effect
See the effect
Use the emulator to see the relationship between frequency and wavelength
Set the movement to OSCILLATE in the top right
Select NO END in the top right
Change the frequency from 1Hz to 2HZ , then to 3HZ
You should see how the distancebetween the peaks decreases!
Now complete task 1 on the companion sheet
Now complete task 1 on the companion sheet
task 2 - The equation
task 2 - The equation
v is wave velocity in metres per second (m/s)
f is the frequency of the wave in Hertz (HZ)
λ is the greek letter "lambda" is the wavelenght of the wave in metres (m)
Click on the equations to help you rearrange it!
Task 3 - We do
Task 3 - We do
Have lets work though the question on the right.
What is the speed of a wave with a frequency of 10kHz and a wavelength of 2m.
v = f x λ
v = 10,000 x 2
v = 20,000m/s
task 4 - You do
task 4 - You do
Work your way through the questions on the companion sheet.
Can you complete the STRETCH Challenge?
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