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P7 Quiz - Are we alone?
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Questions in this quiz (6)
1What is the approximate number of galaxies in the universe?
- A100 billion
- B3 billion
- C300 billion
2What is an exo- (or extrasolar? planet?
- Aa planet that orbits a star other than the sun
- Ba planet that is further from the Sun than the Earth
- Cany planet within our solar system
3Exoplanets are difficult to detect and all the exoplanets discovered so far have been much bigger than our Earth.
- ATrue
- BFalse
4What is the 'Goldilocks zone'?
- Awhere the distance from the star (eg. the Sun) means that it is neither too hot nor too cold to support liquid water
- Bwhere the distance from the star has the perfect temperature (it's just right) to sustain life
- Cthe best chance of a solar system being able to sustain life
5Many scientists believe that, due to the sheer [blank_start]size[blank_end] of the universe and the fact that there are so many [blank_start]galaxies[blank_end], it is highly probable that there will be [blank_start]life[blank_end] on another planet somewhere. Even if a small [blank_start]proportion[blank_end] of stars have extrasolar planets orbiting them, many scientists believe that it is likely that life already [blank_start]exists[blank_end] elsewhere in the universe. However, as yet [blank_start]no[blank_end] evidence for [blank_start]extraterrestrial[blank_end] life - either at present or in the past - has been detected.
- Asize
- Bgalaxies
- Clife
- Dproportion
- Eexists
- Fno
- Gextraterrestrial
6Voyager 1 is one of two probes launched in 1977 by NASA to study the outer solar system. It has travelled 17 billion km carrying 'The Golden Records'.
- ATrue
- BFalse
Information
- Description
- GCSE Physics (P7) Quiz on P7 Quiz - Are we alone?, created by Leah Firmstone on 23/06/2016.
- Author
- Leah Firmstone
- Language
- English
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