Term
| Waves transfer energy without transferring any matter. |
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Definition
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Term
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Definition
| Vibration (Something moving to and fro repeatedly) |
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Term
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Definition
| Transverse and Longitudinal |
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Term
| Example of transverse waves include.... |
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Definition
- Water waves
- Electromagnetic waves
- Waves on strings
- S-waves
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Term
| In a transverse wave, the oscillations are to the direction of travel of the wave. |
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Definition
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Term
| Longitudinal wave examples include.... |
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Definition
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Term
| In a longitudinal wave, the oscillations are in the same direction as the wave is travelling. |
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Definition
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Term
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Definition
| Maximum displacement from equilibrium position. |
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Term
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Definition
| Distance from a point on a wave to the same point on the next wave cycle (crest to crest or trough to tough). |
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Term
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Definition
| Number of oscillations per second. |
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Term
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Definition
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Term
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Definition
| Wave speed = frequency x wavelength |
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Term
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Definition
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Term
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Definition
| The substance the wave is travelling through. |
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Term
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Definition
| Angle of reflection = Angle of incidence |
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Term
| In a mirror, the virtual image is the same behind the mirror, as the object is in of the mirror. |
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Definition
| In a mirror, the virtual image is the same DISTANCE behind the mirror, as the object is in FRONT of the mirror. |
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Term
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Definition
| When a wave crosses a boundary at an angle, if the speed changes the direction of travel changes. |
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Term
| Waves increase in speed or slow down in shallow water?? |
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Definition
| Waves slow down in shallower water. |
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Term
| Light travels slower in...... |
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Definition
Light travels slower in.....
glass
perspex
water
than it does in air. |
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Term
| In refraction, if the wave slows down, it bends the normal. |
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Definition
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Term
| In air, and in a vacuum, light travels at what speed? |
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Definition
3 x 108 m/s
(300,000,000 m/s) |
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Term
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Definition
| Waves spreading out through a gap or round a barrier. |
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Term
| Diffraction is most obvious when waves pass through a gap of about one wavelength. |
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Definition
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Term
| wavelengths are diffracted more than wavelengths. |
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Definition
| Long wavelengths are diffracted more than short wavelengths. |
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Term
| For sound, higher frequency = higher or lower pitch? |
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Definition
| For sound, higher frequency = higher pitch |
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Term
| For sound, bigger amplitude = Louder or quieter sound? |
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Definition
| For sound, bigger amplitude = Louder sound |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Light travels in straight lines. |
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Term
| A ray is a line to show the direction of part of a light wave. |
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Definition
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Term
| A real image can be seen on a screen. |
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Definition
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Term
| A virtual image cannot be seen on a screen. |
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Definition
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Term
| Total internal reflection happens when................ |
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Definition
| Total internal reflection happens when the angle of incidence is bigger than the critical angle (for that boundary). |
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Term
| Total internal reflection happens when travelling from a medium. |
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Definition
| Total internal reflection happens when travelling from a slower to a faster medium. |
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Term
| Light/infra red signals travel along an optical fibre by repeated total internal reflection. |
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Definition
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