P1 topic 1 key words Edexcel core

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  • Created by: Rhiiii
  • Created on: 04-06-13 19:08
Geocentric model
Model of the solar system in which the Earth is at the centre
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Heliocentric model
Model of the solar system in which the sun is at the centre
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Wave speed
Distance travelled by a wave / Time it takes the wave to travel that distance
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Amplitude
The maximum distance of particles in a wave from their original position
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Frequency
The number of waves which pass a certain point every second
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Orbit
The path taken by a planet around the sun, or by a satellite around a planet
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Wave length
Distance between a point on wave and the same point on the next
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Longitudinal wave
Waves in which particals move back and forth parallel to the wave's travel
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Transverse wave
Waves in which particles move up and down at right angles to the direction of travel
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Seismic wave
Waves produced in an explosion or by an earthquake which travel through the earth. they include P and S waves.
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Electromagnetic waves
Waves which are all transverse and travel at the speed of light in a vacuum
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Hertz
A unit for measuring frequency
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Reflection
When a wave bounces off a boundary between two materials
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Refraction
The change of speed and direction of a wave when it enters a new material
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Convex lens
A lens which bulges outwards in the middle
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Objective lens
The lens in a telescope which is nearest to the object being observed
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Eyepiece lens
Lens in a telescope which magnifies the image produced - closest to the observer
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Reflecting telescope
Telescope in which the focussing of the image is done by a mirror
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Refracting telescope
A telescope which consists of a series of lenses
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Primary mirror
The main mirror in a reflecting telescope which converges light to form an image
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Focal length
The distance between a convex lens and the point at which the image of a very distant object is produced
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Real image
An image in which the rays of light meet at a point where the image is seen
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Virtual image
An image that cannot be projected onto a screen, where the light appears to come from the image itself
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Other cards in this set

Card 2

Front

Model of the solar system in which the sun is at the centre

Back

Heliocentric model

Card 3

Front

Distance travelled by a wave / Time it takes the wave to travel that distance

Back

Preview of the back of card 3

Card 4

Front

The maximum distance of particles in a wave from their original position

Back

Preview of the back of card 4

Card 5

Front

The number of waves which pass a certain point every second

Back

Preview of the back of card 5
View more cards

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