11.7 Wave Motion
11.8 Types of Waves: Transverse and Longitudinal
11.9 Energy Transported by Waves
11.11 Reflection and Transmission of Waves
11.12 Interference; Principle of Superposition
11.13 Standing Waves; Resonance
11.14 – 11.15 Refraction and Diffraction
Objectives:
1. Students will describe the motion of a wave.
2. Students will calculate the velocity of a wave.
3. Students will compare and contrast transverse and longitudinal waves.
4. Students will describe how earthquakes are related to transverse and longitudinal
waves.
5. Students will explain how waves can occur in more than one-dimension.
6. Students will explain how intensity is connected to wave energy.
7. Students will demonstrate an understanding of wave reflection and the
consequence of interference.
8. Students will demonstrate how resonance occurs in wave.
9. Students will compare and contrast refraction and diffraction.
Homework: 36,37,39-43,52-58p. 318-320
Formula Search –Find all formulas state the units and purpose for making
calculations.
Vocabulary to Know:
Energy
Plane waves
Amplitude
Incident ray
Intensity
Reflected ray
Power
Law of reflection
Spherical wave
Interference
Pulse
Superposition
Reflection
Destructive
Wave fronts
Constructive
Ray
Phase
Standing wave
Node
Antinode
Frequency
Resonant frequency
Natural frequency
Fundamental frequency
Overtone
Harmonics
Refraction
Diffraction
11.7 Wave Motion:
1. How do ocean waves affect the water through which they move?
2. Is the velocity of a wave moving along a cord the same as the particle of the cord?
3. What are waves?
4. How is a wave pulse created?
5. What is the source that propagates a wave?
6. Draw, list, and define some important wave quantities.
7. Describe some basic principles associated with the speed of a wave on a cord.
11.8 Types of Waves: Transverse and Longitudinal:
1. Describe a transverse wave.
2. Describe properties of a longitudinal wave.
3. Compare and contrast longitudinal and transverse waves.
4. What types of waves are produced in earthquakes?
5. How does knowledge of transverse and longitudinal waves aid geophysicists?
6. How do waves break?
11.9 Energy Transported by Waves:
1. How can the energy of a wave be determined?
2. How is intensity related to a wave?
3. Why are sounds quieter farther from their source?
4. How does a one dimensional wave differ from spherical waves?
5. Describe the wave pulse as it moves from a light medium to a heavy medium and is
reflected back.
6. Compare the reflection of a wave pulse in a rope with a fixed end and a movable end.
7. How are wave fronts important in the explanation of wave movement?
11.12 Interference; Principle of Superposition:
1. How does wave interference relate to the principle of superposition?
2. Compare and contrast destructive and constructive waves.
11.13 Standing Waves; Resonance:
1. How is a standing wave created?
2. Describe the anatomy of a standing wave using figures 11-39 & 40.
3. How are frequency and harmonics related to the motion of a standing wave?
4. How can standing waves be used to produce different frequencies of pitches?
5. Where else do standing waves produce notes?
11.14-15 Refraction and Diffraction
1. How does the refraction of a wave occur?
2. What is the law of refraction?
3. How can refracted waves help us better understand earthquakes?
4. How can waves be diffracted?
5. How can understanding wave diffraction be helpful in communications?