Year 8 Space Revision

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Across
  1. 2. The name for our neighbouring galaxy. It will collide with our galaxy in approx 4 billion years
  2. 8. The closest planet to the Sun
  3. 9. An explosion caused by matter collapsing in on itself. It will outshine galaxies for many days.
  4. 11. Main sequence stage is the most stable because the forces are _______
  5. 12. This word means 'getting larger' and is used to describe when the shape of the moon is becoming larger
  6. 14. When the northern hemisphere is tilted away from the Sun, we call this ______
  7. 18. An object so dense that even light cannot escape its gravitational pull. There is one at the centre of our galaxy.
  8. 22. This is the name for when we see a slither of the moon
  9. 23. A planet famous for its Great Red Spot
  10. 24. The next stage for our Sun. It will engulf Mercury and Venus.
  11. 27. Mercury and Venus have orbits that are _____ than Earth's
  12. 28. In summer it is warmer because the Sun's light is spread over a smaller ______
  13. 29. The name of the force that holds all the planets in orbit around the Sun
  14. 34. When the moon is between the Sun and Earth the phase is called _____ ______
  15. 35. The process of releasing energy from fusing two small nuclei together to make a larger one
  16. 36. A famous satellite that orbits the Earth which has taken many pictures and allowed us to study the universe
  17. 37. In winter it is colder because the Sun's light is spread over a ____ area and it is therefore less intense
  18. 38. A planet known as 'The Red Planet'
  19. 40. Eclipses do not happen all of the time because the moon's orbit is _________
  20. 42. Stars are mainly made from this element
  21. 44. The name of another star in the night sky. Also the name of a Harry Potter character who killed Neville Longbottom's parents
Down
  1. 1. This happens when the moon passes behind the Earth and into its shadow ______ ________
  2. 3. The name of our spiral galaxy
  3. 4. The outer planets are known as the gas ______ because of their size and what they are made from
  4. 5. The dense core that is left after layers of the star have drifted away. It will continue to cool.
  5. 6. When the moon is behind the Earth, opposite the Sun we call this phase ____ ____
  6. 7. The name for the pathway planets take around the Sun
  7. 8. A measure of how much material something is made from. Measured in kg
  8. 10. A measurement of distance in space because it is so vast
  9. 13. A theoretical star that we have not found to exist yet because the time it takes to make one is longer than the age of the universe
  10. 15. A planet known as Earth's 'sister planet'
  11. 16. A 'planet' famously demoted to dwarf planet status
  12. 17. The 4 inner planets are known as the ____ planets because of the material they are made from
  13. 19. This planet is furthest from the Sun
  14. 20. When the Earth orbits the Sun once, we call this one ______
  15. 21. This is found between Mars and Jupiter
  16. 25. This is the name for when we see almost all of the moon
  17. 26. Once the star has been created it enters the ______ stage before it becomes a Main Sequence Star
  18. 27. A planet famous for its rings
  19. 30. This word means 'getting smaller' and is used to describe when the shape of the moon is becoming smaller
  20. 31. This happens when the moon passes in between the Sun and the Earth _____ ________
  21. 32. A force. Measured in N. A measure of how much force with which something is pulled to Earth.
  22. 33. When the moon orbits the Earth once, this is called one _______
  23. 34. Where stars are created in the clouds of dust and gas
  24. 39. When the northern hemisphere is tilted towards the Sun, we call this _____
  25. 41. This region of the Earth doesn't experience seasons in the same way as the hemispheres
  26. 43. The name of a famous star in our night sky (the brightest in fact). Also the name of Harry Potter's god father