Question

Read the passage and answer the following question(s).



Sound Waves



A student uses a computer to play four different sounds. As each sound plays, the computer displays a graph of the sound wave. The graphs of the sound waves are shown.



image.png



The computer also displays the energy of each sound wave. The table shows the energy of Wave 1 and Wave 3.

image.png



Using the information in the models, which wave has the highest frequency?


Wave 1


Wave 2


Wave 3


Wave 4

Answer 1

I can’t see the graphs you mention. To tell which wave has the highest frequency you need the one with the most cycles (crests/troughs) in the same time interval — i.e. the shortest wavelength on the graph. The energy values (which depend on amplitude) don’t determine frequency.

If you can either
- upload the image of the four wave graphs, or
- tell me how many complete cycles each Wave 1–4 shows in the same time interval,

I’ll pick the correct wave.