Physics 1 Advanced Waves: Sound, SEISMIC and Light Unit Guide (Chapters 11-12, 13.1, 20.4) Key Terms Wave Transverse Wave vs. Longitudinal Wave Restoring force and Hooke’s Law Mechanical Wave Electromagnetic Wave Seismic Waves Focus vs. epicenter S-wave and P-wave Plate Tectonics and convection of the mantle Simple Harmonic Motion and simple pendulum Rest or equilibrium position Period (seconds) Wavelength (meters) Wave speed equation Crest vs. trough Amplitude (meters) Frequency (Hertz) Standing Wave (node vs. antinode) Constructive vs. Destructive Doppler Effect Interference Sound Waves Light Waves (Electromagnetic Waves) Media and speed of sound Dual nature of light (waves vs. photons Pitch (Hertz) vs. Loudness Media and speed of light (decibels) Natural frequency, forced Electromagnetic spectrum vibration, resonance, and (seven groups), temperature beats and frequency and photon energy, polarization Learning Targets (Can you… Chapter 11 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Explain Hooke’s law and restoring force? Explain a simple pendulum, how period is influenced by string length and how to determine the restoring force. Explain simple harmonic motion and its relationship to waves? Explain what causes a wave? Draw a transverse wave and a longitudinal wave and label all parts and explain how each differs in terms of vibrations and wave transmission. State the units for frequency, wavelength, amplitude and period? Explain the relationships between frequency and intensity, frequency and period, and frequency and wavelength? Explain the relationship between amplitude and energy? Explain what a wave carries? Explain what influences wave speed and solve wave speed and frequency problems? Compare and contrast mechanical and electromagnetic waves (think wave speed, formation, different mediums)? Contrast reflection and interference of waves? 13. 14. 15. 16. Describe fixed-boundary vs. free-boundary reflection of wave? Explain wave interference and how can it be constructive or destructive? Explain a standing wave (nodes and antinodes) and what it its importance to music? Explain how harmonics are related to standing waves? Chapter 12 (Sound) Can you… 17. 18. 19. 20. 21. 22. 23. 24. Explain how sound waves are produced? Explain the type and form of a sound wave? Explain pitch and its relationship to frequency? Explain the Doppler Effect and its cause for sound and light? Explain loudness, Decibels and the relationship to intensity? State the normal frequency range for human hearing? Explain how the human ear works? Explain forced vibration, natural frequency and resonance? Seismic Waves Can you… 25. 26. 27. 28. 29. 30. 31. 32. 33. Compare and contrast the two types of body seismic waves that travel through the Earth? Explain what causes earthquakes and its relationship to plate tectonics? Explain why three seismic stations are needed to find the epicenter of an earthquake? Explain what seismic evidence supports the idea that the inner core is solid and the outer core is liquid? Explain the sources of internal heat in the Earth? Explain what occurs in the mantle to cause the plates to move? Explain the three plate boundaries and what is the difference between convergence and divergence? Explain the difference between an epicenter and focus of an earthquake? In general, where do most of the major earthquakes on Earth occur? Chapter 13.1, 20.4 (Light, Electromagnetic Waves and the Electromagnetic Spectrum) Can you… 34. 35. 36. 37. 38. 39. Explain how electromagnetic waves are produced and how temperature influences the frequency and wavelength of light? List the seven groups of light on the electromagnetic spectrum? Explain how media influences the speed of light? Explain the dual nature of light? Explain how the inverse-square law applies to light? Explain the photo-electric effect associated with solar panels? Learning Targets (Can you… 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. Explain Hooke’s law and restoring force? Explain a simple pendulum, how period is influenced by string length and how to determine the restoring force. Explain what causes a wave? Explain what a wave carries? Compare and contrast mechanical and electromagnetic waves (think wave speed, formation, different mediums)? Draw a transverse wave and a longitudinal wave and label all parts and explain how each differs in terms of vibrations and wave transmission. State the units for frequency, wavelength, amplitude and period? Explain the differences and relationships between frequency and intensity, frequency and period, and frequency and wavelength. Explain the relationship between amplitude and energy. Solve wave speed and frequency problems? Explain pitch and its relationship to loudness? State the normal frequency range for human hearing? Explain how the human ear works? Explain the type and form of a sound wave? Explain forced vibration, natural frequency and resonance? Explain wave interference and how can it be constructive or destructive? Explain a standing wave (nodes and antinodes) and what it its importance to music? Explain how harmonics are related to standing waves? Explain the Doppler Effect and its cause for sound and light? Describe fixed-boundary vs. free-boundary reflection of wave? Problems 1. 2. 3. 4. 5. Hooke’s Law Simple Harmonic Motion of simple pendulum and mass-spring system Wave Speed Intensity of sound waves Harmonics