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Waves Chapter 15
'What Are Waves' 'Properties of Waves' 'Interactions of Waves' 'Seismic Waves'
| Question | Answer |
|---|---|
| Wave | Disturbance that transfers energy from place to place |
| Energy | The ability to do work |
| Medium | Material through which a wave travels |
| Mechanical Wave | Need a medium through which to travel |
| Vibration | Repeated back and forth, or up and down motion |
| Transverse Wave | Move the medium at right angles to the direction in which the wave travels |
| Crest | High point of a transverse wave |
| Trough | Low part of a transverse wave |
| Longitude Wave | move the medium parallel to the direction in which the waves travel |
| Compression | Parts where the coils are close together |
| Rarefaction | Parts where the coils are spread out |
| Amplitude | the maximum distance that the particles of the medium carrying the wave move away from their rest position |
| Wavelength | The distance between two corresponding parts pf a wave |
| Frequency | The number of complete waves that pass a certain point in a certain amount of time |
| Hertz (Hz) | Units frequency is measured in |
| Reflection | Interaction with a surface |
| Law of Reflection | States that the angle of incidence equals the angle of reflection |
| Refraction | Bending of waves due to a change in speed |
| Diffraction | When a wave moves around a barrier or through an opening in a barrier, it bends and spreads out |
| Interference | The interactions that between waves that meet |
| Constructive Interference | The interference that occurs when waves combine to make a wave with a larger amplitude |
| Destructive Interference | The interference that occurs when two waves combine to make a wave with smaller amplitude |
| Standing Wave | A wave that appears to stand in one place, even though it's really two waves interfering as they pass each other |
| Node | |
| Anti-node | |
| Resonance | |
| Seismic Wave | |
| P Wave | |
| S Wave | |
| Surface Wave | |
| Tsunami | |
| Seismograph |