Astrophysics - Cosmology

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  • Created by: Lauren
  • Created on: 04-05-14 09:14
Doppler Effect
The shortening or lengthening of wavelength dependent on whether the star is moving towards or away from us.
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Wavelength
Distance between successive wave peaks of the wave.
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Red Shift
The shift to longer wavelengths at the red end of the spectrum in light from a source moving away from us.
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Blue Shift
The shift to shorter wavelengths at the blue end of the spectrum in light from a source moving towards us.
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Spectroscopic Binary
Two stars cannot bee resolved.
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Cepheid Variable Stars
These stars vary in brightness with a period of the order of days.
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Big Bang Theory
The Universe is expanding as it was created in a massive 'primordial' explosion and has been expanding ever since.
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Dark Energy
Hidden energy being released by a hitherto-unknown type of force causing the Universe to accelerate.
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Quasar
A very powerful light output, relatively small and very far away object.
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Other cards in this set

Card 2

Front

Distance between successive wave peaks of the wave.

Back

Wavelength

Card 3

Front

The shift to longer wavelengths at the red end of the spectrum in light from a source moving away from us.

Back

Preview of the back of card 3

Card 4

Front

The shift to shorter wavelengths at the blue end of the spectrum in light from a source moving towards us.

Back

Preview of the back of card 4

Card 5

Front

Two stars cannot bee resolved.

Back

Preview of the back of card 5
View more cards

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