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Chapter 2
Waves
| Term | Definition |
|---|---|
| Wave | A disturbance involving the transfer of energy from one place to another |
| Energy | The ability to do work |
| Medium | The material through which a wave travels |
| Mechanical wave | Waves that require a medium to travel |
| Vibration | A repeated back and forth or up and down motion |
| Transverse wave | A wave that vibrates the medium at right angles, or perpendicular to the direction the wave travels |
| Crest | A high point on a transverse wave |
| Trough | A low point on a transverse wave |
| Longitudinal Wave | Vibrates the medium in the same direction the wave travels |
| Compression | An area where the coils are close together |
| Rarefraction | An area where the coils are spread out |
| Amplitude | The maximum distance the medium vibrates from the rest position |
| Wavelength | The distance between two corresponding parts of a wave |
| Frequency | The number of waves that pass a given point in a certain amount of time |
| Hertz | Frequency is measured in this unit |
| Reflection | When a wave hits a surface that it cannot pass through and it bounces back |
| Refraction | When a wave enters a different medium at an angle causing the speed of the wave to change. The wave will bend. |
| Diffraction | When waves bend around barriers or through an opening in a barrier |
| Interference | The interaction of waves that meet |
| Constructive Interference | Interference in which waves combine to form a wave that is bigger and has a larger amplitude than either of the two original |
| Destructive Interference | Interference in which two waves combine to form a wave with a smaller amplitude than either of the two original waves |
| Standing Wave | A wave that appears to be standing still even though it is two waves passing through each other |
| Resonance | Increase in amplitude of a vibration that occurs when external vibrations match an object's natural frequency |
Created by:
Bmacyscience
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