What’s the amplitude of a wave mean
Maximum displacement of a point on a wave away from its undisturbed position
What’s the wavelength of a wave mean
The distance from a point on one wave to the equivalent point on the adjacent wave
What’s the frequency of a wave mean
The number of waves passing a point each second
What’s the wave speed mean
The speed at which energy is transferred through the medium
Waves can be “blank” or “blank” or “blank” at the boundary between two different materials
Transmitted or absorbed or reflected
In transverse waves are the oscillations parallel or perpendicular
Perpendicular
In longitudinal waves are the oscillations parallel or perpendicular
Parallel
What’s the normal hearing of a human
20 Hz to 20 kHz
What happens within the ear?
Sound waves cause the ear drum and other particles to vibrate causing the sensation of sounn
What are electromagnetic waves
Transverse waves that transfer energy from the source of the waves to an absorber
How are electromagnetic waves grouped
Wave length and frequency
What are the groups of electromagnetic waves?
Radio, microwaves, infrared, visible light, ultraviolet, x-rays , gamma rays
What is refraction of light waves?
Waves change direction as they pass from 1 medium to another
When a wave travels into a more dense medium, the wave speed decreases. The frequency of the wave does what
Stays the same
When a wave travels into a more dense medium, the wave speed decreases. The wavelength of the waves does what
Decreases
Whehn does specular reflection happen
When the boundary is flat and it forms a clear image. Normals are all in the same direction
When does diffuse scattered happen ?
When the boundary is bumpy and doesn’t form a clear image. Normals go in all different directions
Which types of electromagnetic waves are used in communication ?
Micro waves and radio waves
Which types of electromagnetic waves are ionising?
X rays and gamma rays
What’s an oscilloscope used for
To see frequency of alternating current
What’s a receiver used for
Absorbs the energy and generates anther alternating current
What are the three types of radio waves
Long waves, short waves and very short waves
How do long waves travel
Diffract around the curved surface of the earth
How do short waves travel
Reflect from the ionosphere
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Chemistry Topic 226
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Chemsitry Topic 117
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Pe Paper 231
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Paper 1 Exam Questions Chemistry16
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Waves Physics50
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Biology Topic 652
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Organic Chemistry69
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Physics Paper 16
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Topic 4 Biology23
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Physics Topic 8 Space25
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Physics Topic 453
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Key Science Terms6
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Chemistry Equations6
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Chemistry Paper 1 all7
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Electricity Physics52
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Chemistry Chemical Analysis 829
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Topic 1 Biology53
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Chemistry Topic 1071
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Chemistry Of The Atmosphere 939
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Equilibrium Chemistry Topic 613
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Ecology Biology 773
