Part 2: Sound Now choose the speaker (sound) the bottom. Set to top view and the multiple waves. Put Frequency and Amplitude in the middle (just like you did with the water) Choose Play Tone and Waves. Also attach your wave meter and drag one probe into the wave-viewing area. Click on Both Particles and Waves so you can watch how both vary. Sound Screen Use a speaker to create a sound wave. Observe the sound wave as particles, waves, or both. OBSERVE the HEAR the sound distance and time Fogerty generated by the scale speaker Do @ Warm SEE particle or wave view of COMPARE amplitude and phase Waves Intro 40 PHET : 12. You can have your sound on - but don't have it extremely loud. Push the green button for sound. Explore the sound simulation as you change the amplitude and frequency. Look for patterns and relationships. Describe something you notice. 13. Do the particles move in the same direction as the wave or perpendicular to the motion of the wave? What do we call this kind of a wave? (transverse or longitudinal?) 14. Freeze and observe: are the particles closer together or farther apart in the white area of the wave-viewing area? 15. What is the name for this portion of a wave