Astronomy + Other Stuff

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Across
  1. 3. The coldest surface temperature of a star is this colour.
  2. 5. A resultant force causes...
  3. 6. Unit of Force
  4. 10. A dead core of a relatively light star, like our Sun. There is no more fusion occurring.
  5. 11. Nuclear _______ is the process of joining up small atomic nuclei to form larger ones. This releases the energy that powers stars.
  6. 12. Stage of a star after a lighter star, similar to our Sun, runs out of hydrogen and begins fusing helium and other heavier elements together.
  7. 17. When the resultant force = 0N, we say forces are...
  8. 19. The gravitational field strength of an object depends on its...
  9. 20. A collection of billions of stars.
  10. 23. Planets' and Moons' orbits are this shape.
  11. 26. The amount of matter contained within an object
  12. 27. Stage of a star when it is fusing hydrogen into helium. Longest stage of its life.
  13. 30. The force due to gravity
  14. 32. Your weight _________ when standing on Jupiter, rather than Earth.
  15. 33. Unit of mass
  16. 34. Very Heavy stars can end up as this extremely small and extremely dense stage at the end of its life. It is still visible.
  17. 35. Heavier stars will continue fusing elements up to Iron. The core then collapses under its own gravity and violently explodes as a __________.
  18. 36. The _______ magnitude is a measure of how bright an object appears to our eyes as we see them.
Down
  1. 1. A Red ________ is the stage after stars much heavier than our Sun run out of Hydrogen to fuse.
  2. 2. A quantity with both magnitude and direction
  3. 4. The gravitational field strength of Earth is roughly _____ N/kg (In words).
  4. 5. Force that increases the faster you are moving
  5. 7. Unit of Weight
  6. 8. Speed in a given direction
  7. 9. The ______ of the star is where nuclear fusion takes place.
  8. 13. Gravitational field strength _________ as you get further from the surface of a planet/star/moon.
  9. 14. This property of a star determines which type of life it will follow after its Main Sequence stage.
  10. 15. The _______ magnitude is a measure of how bright a star, or something else, is from a fixed distance away.
  11. 16. Unit of speed or velocity
  12. 18. The nucleus of this element's atom is used as fuel in Main Sequence stars.
  13. 21. The heaviest stars keep collapsing under gravity until their gravitational field is so strong that not even light can escape.
  14. 22. The sum of all forces. Needs to not be 0N to cause an object to accelerate.
  15. 24. A Comet's orbit is this shape.
  16. 25. The hottest surface temperature of a star is this colour.
  17. 28. In this stage in a young star's life, the dust and gas is now dense enough to get hot and glow, but not cause any fusion yet.
  18. 29. A cloud of dust and gas that is pulled together by gravity.
  19. 31. The mass of an object is c_______ no matter where it is in the universe.