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| Question | Answer |
| What is a progressive wave? | An oscillation whose compressions and rarefractions or peaks and troughs move through the median as energy is transferred. |
| Describe the movement of a particle when a progressive wave passes through it: | It moves away from its equilibrium position into a new position. It then experiences a restoring force from adjacent particles and is pulled back to its original position. |
| Define displacement: | Distance from equilibrium position. |
| Define amplitude: | Maximum distance from equilibrium position. |
| Define wavelength: | The minimum distance between two points in phase on adjacent waves. |
| Define period of oscillation: | The time taken for one cycle, oscillation or wave to move one wavelength past a given point. |
| Define frequency: | The number of wavelengths passing a given point per unit time. |
| Define wavespeed: | The distance traveled by wave per unit time. |
| Define phase difference: | The relationship between the patterns of wavelength either for two points on the same wave or two different waves. Measured in radians or degrees. |
| What is the equation for path difference? | Path difference = distance between points / wavelength |
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