What is the cosmic microwave background radiation (C.M.B.R.)?
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A form of sound wave which fills the whole of the Universe and is thought to be a remnant of the early stages of the Universe's life
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A form of mechanical wave which fills the whole of the Universe and is thought to be a remnant of the early stages of the Universe's life
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A form of electromagnetic radiation which fills the whole of the Universe and is thought to be a remnant of the early stages of the Universe's life
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There is no such thing as the C.M.B.R
Q.2.
How does the frequency and wavelength of a wave source change when it moves towards an observer?
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The wavelength increases whilst the frequency decreases
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The wavelength decreases whilst the frequency increases
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The wavelength increases and the frequency increases
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The wavelength decreases and the frequency decreases
Q.3.
If a police car is travelling away from an observer and its siren is on, how will the wavelength be different to when the car is moving towards the observer?
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Shorter
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Longer
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The same
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Impossible to tell
Q.4.
Where does C.M.B.R come from?
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Radiation present shortly after the beginning of the Universe
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Radiation generated by humans on Earth
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Radiation generated by the sun
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Radiation generated by gas giants such as Jupiter and Saturn
Q.5.
How does the frequency and wavelength of a wave source change when it moves away from an observer?
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The wavelength decreases whilst the frequency increases
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The wavelength increases whilst the frequency decreases
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The wavelength decreases and the frequency decreases
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The wavelength increases and the frequency increases
Q.6.
Why does redshift support the idea of the Big Bang theory?
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It demonstrates that the Universe is expanding as more distant galaxies are moving away from us
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It demonstrates that the Universe is collapsing as more distant galaxies are moving towards us
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It does not offer any insight as to whether the theory is true or not
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It shows that the Universe in stationary and not expanding or shrinking
Q.7.
If a police car is travelling towards an observer and its siren is on, will the frequency of the siren be higher, lower or the same as when the car is moving away from the observer?
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Lower
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Higher
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The same
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Impossible to tell
Q.8.
What is the Doppler effect?
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The Doppler effect is the change in the observed wavelength and frequency of a source which is stationary relative to an observer
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The Doppler effect is the change in the observed wavelength and frequency of a source which is moving relative to an observer
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The Doppler effect is the change only in the observed wavelength of a source which is stationary relative to an observer
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The Doppler effect is the change only in the observed frequency of a source which is stationary relative to an observer
Q.9.
Which is the only current theory that explains and accounts for the existence of the C.M.B.R?
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Theory of Special Relativity
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General Theory of Relativity
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Little Bang Theory
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Big Bang Theory
Q.10.
It can be observed that there is an increase in the wavelength of light received from distant galaxies. The further away the galaxy is, the faster it is moving away from us and the larger the observed increase in wavelength. What is this effect commonly known as?
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Redshift
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Blueshift
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Whiteshift
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Purpleshift
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