waves-2-wave-properties and types notes.pdf
- 1. Properties of Traveling Waves IB PHYSICS | WAVES - SOUND
- 2. What is a Wave?
- 3. What is a Wave? A wave is a disturbance that carries __________ through matter or space matter through which a wave travels
- 4. Is the Medium Moving? The medium particles oscillate back and forth
- 5. Two Types of Waves Particles move perpendicular to the wave’s motion Particles move parallel to the wave’s motion Examples: • Ripples in a pond • Light Waves Examples: • Sound Waves • Earthquake Waves
- 6. Properties of a Wave
- 7. Properties of a Wave Property Symbol Unit Amplitude Wavelength distance
- 8. Waves and Energy ↑ Amplitude = ⃝ Energy ↓ Amplitude = ⃝ Energy ↑ Wavelength = ⃝ Energy ↓ Wavelength = ⃝ Energy
- 9. Label this wave Can you identify the wave properties from this diagram? Amplitude? Wavelength?
- 10. How Many Waves?
- 11. Wavelength is related to frequency Longer wavelength _________ frequency Shorter wavelength _________ frequency Lower Higher
- 12. Wave Speed Equation Speed = Frequency × Wavelength Symbols Units = × = ×
- 13. IB Physics Data Booklet
- 14. Try this… A piano string vibrates with a frequency of 262 Hz. If these sound waves have a wavelength in the air of 1.30 m, what is the speed of sound?
- 15. Read a Wave #1 # of Waves Period Amplitude Frequency 1 2 3 3 2 1 0 Meters Seconds 0 1 2 3 4 5 6 7 8 9 10 11 12 𝑓 = 1 𝑇 𝑇 = 1 𝑓
- 16. Read a Wave #2 1 2 3 3 2 1 0 Meters Seconds 0 1 2 3 4 5 6 7 8 9 10 11 # of Waves Period Amplitude Frequency 𝑓 = 1 𝑇 𝑇 = 1 𝑓
- 17. One Final Question… The crests of waves passing into a harbor are 2.1 m apart and have an amplitude of 60 cm. 12 waves pass an observer every minute. What is their frequency? What is their speed?
- 18. Lesson Takeaways ❑ I can describe how waves carry energy through a medium ❑ I can compare the properties of transverse and longitudinal waves ❑ I can read a wave’s amplitude, wavelength, period, and frequency from a graph ❑ I can describe the number of complete wavelengths represented in a picture ❑ I can use the wave speed equation to mathematically relate speed, wavelength, and frequency