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25 Cards in this Set
- Front
- Back
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What is a wave |
Is a disturbance which travels through a medium from one point to another without causing any permanent displacement of the medium itself |
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Classes of Waves |
Mechanical wave Electromagnetic wave |
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What are mechanical wave |
Are Waves that need material medium for their propagation |
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What are electromagnetic wave |
Are Waves that doesn't require material medium e.g light wave, Radio wave ,x-rays and gamma ray |
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The characteristics of vibration that determines it's intensity is |
Amplitude |
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Factor that affect velocity of sound |
Wind travelling in the same direction as the sound |
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The fundamental property of a propagating wave which depends only on the source and not the medium is |
Wavelength |
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Transverse wave can be distinguished from longitudinal wave using the characteristics of |
Polarization |
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Vibrations in a a stretched spring cannot be polarized because they are |
Longitudinal wave |
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Stationary wave |
They are formed by two identical wave travelling in opposite directions |
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What are shadows |
Are formed by opaque object. It is an area light can't pass through |
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What are opaque object |
They don't let light pass through them |
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The direction or path light travel is called |
Light ray |
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What are referred to as beam of light |
Divergent Parallel Convergent |
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What are rectified propagation |
Referred to as the phenomenon of light travelling in a straight line |
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What are umbra |
Total shadow , not reached by any light |
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What are penumbra |
Where there is partial shadow |
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Types of eclipse |
Eclipse of the sun Eclipse of the moon |
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Eclipse of sun |
When the moon is between the earth and sun |
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Eclipse of the moon |
When the sun is between the earth and moon |
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Examples of transverse wave |
Light Radio X-ray |
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What are stationary wave |
When two simple harmonic wave of the same amplitude frequency and time are travelling in opposite directions |
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Example of stationary wave is |
Sinusoidal wave |
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What are Progressive wave |
This occurs when a travelling wave moves continuously from one point to another |
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Example of progressive wave are |
Transverse Progressive |
