1)What happens to the particles?                                 2

1)What happens to the particles?

2. Move the Amplitude slider up and down. How does the sound change?

3. How does the motion of the particles change?

4. Does the position of the pattern change? The pause button and tape might help.

5. The wavelength of a sound wave is the distance between 2 compression areas or 2

rarefaction areas. Use the pause button and tape to measure the wavelength of

your soundwave.

6. Sketch the shape of the pressure wave on the diagrams below.

7. Move the Frequency slider up and down. How does the sound change?

8. How does the motion of the particles change?

9. Use the stopwatch tool with the pressure tool to measure the time it takes for 10

compression areas to pass. Use the times to calculate the period and complete the

table below.

SUMMARY TASK

1. Look at the words below. Consider whether you associate them with amplitude or frequency and place them

into the table.

2. Draw on the diagram a wavelength between compression areas and a wavelength between rarefactions.