Space GCSE Revision

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Across
  1. 3. Nuclear reaction that forms helium from hydrogen
  2. 7. Heaviest element formed in a supernova
  3. 11. A near spherical body that orbits a star
  4. 12. Largest planet in our solar system
  5. 13. Element that contains only 1 proton in its nucleus
  6. 15. The surface temperature of a star determines its ....
  7. 16. The further away a galaxy is the faster it is moving away from us. What does this suggest the Universe is doing?
  8. 19. CMBR can be detected in all directions and is left over from the Big Bang. What does the "M" stand for
  9. 21. A star is this it the inward gravitational forces are balance by the outward forces due to nuclear fusion
  10. 23. Spherical ball made mostly of hydrogen that will eventually become a main sequence star
  11. 24. A star much bigger than our sun will become a red _ _ _ _ _ _ _ _ _ _
  12. 25. A natural satellite that orbits a planet
  13. 26. The Milky Way is the name of the _ _ _ _ _ _ that our solar system is in.
Down
  1. 1. After the main sequence stage of our sun's life it will become a red _ _ _ _ _
  2. 2. Force that keeps an object in a circular orbit
  3. 4. A _ _ _ _ _ _ _ star is a very dense core remnant left over after a supernova
  4. 5. Huge explosion of a red supergiant
  5. 6. A white _ _ _ _ _ is formed as a red giant collapses
  6. 8. Increase in received wavelength of light caused by the light emitter (star) and receiver (you) moving apart
  7. 9. Produced by the fusion of hydrogen in a star's core
  8. 10. Our sun is about 5 _ _ _ _ _ _ _ years old
  9. 14. Effect where there is a change in pitch as a sound source moves towards or away from you
  10. 17. Heaviest element formed by nuclear fusion in a star's core
  11. 18. Force that pulls masses together
  12. 20. A spectrum which has dark lines which are specific to different electron transitions in elements
  13. 22. If light from a galaxy has a bigger red-shift it is moving _ _ _ _ _ _ away from you