The Nature of Waves
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Created by:
caitlinrjohnston on March 31, 2012
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14 terms
Terms | Definitions |
|---|---|
 Where does a wave transfer is energy? | Away from the source |
| Displacement, X | How far from a point on the on the wave has moved from it's undisturbed position. |
| Amplitude, a | Maximum displacement, metres. |
| Wavelength, λ | The length of one whole wave, from crest to crest or trough to trough, metres |
| Period, T | The time taken for a whole vibration, seconds |
| Frequency, f | The number of vibrations per second passing a given point |
| Phase Difference | The amount by which one wave lags behind another wave. Measured in degrees or radians. |
| Reflection | The wave is bounced back when it hits a boundary |
| Refraction | The wave changes direction as it enters a different medium |
| What is intensity? | The rate of flow of energy per unit area at right angles to the direction of travel of the waves |
| What is intensity proportional to? | The square of the amplitude of the wave |
| What is the unit of frequency? | 1 Hz = 1 s₋¹ |
| What is the equation for wave speed? | Speed (v) = Distance moved (d) / time take (s) |
| What is the wave equation? | Speed of wave (v) = Wavelength (λ) x Frequency (f) |
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