Year 8 Crossword Challenge!

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Across
  1. 2. times Brazil has won the world cup (4)
  2. 3. surname of first wife of Henry VIII to be beheaded for treason (6)
  3. 5. comets are frozen balls of ice and what else? (4)
  4. 6. movement against sexual harassment and assault (6)
  5. 13. type of snake that squeezes it's prey to death (8)
  6. 14. disease you might get if you pancreas does not make enough insulin (8)
  7. 15. painter of 'The Persistence of Memory' featuring melted clocks (4)
  8. 16. surname of the founder of Amazon (5)
  9. 18. a rotating axle that carriers power from the pistons in an engine to the gearbox (10)
  10. 20. name of spacecraft that took the first man to moon (8)
  11. 21. vote held to settle major issues, such s creating new laws (10)
  12. 22. in the Battle of Somme (World War 1) how many miles of ground was gained by the allies (5)
  13. 23. type of tooth good for gripping and tearing food (6)
Down
  1. 1. surname of actor in Die Hard series (6)
  2. 4. when a company tries to save money by employing a separate company who will work for less money (11)
  3. 7. American children pledge alliance to this, every morning at school (4)
  4. 8. a thing that moves around or reacts with something in a Scratch project (6)
  5. 9. a group of classical musicians led by a conductor (9)
  6. 10. type of power that the energy in moving water to make electricity (13)
  7. 11. manga villain who thrives on war and leads armies (7)
  8. 12. saving this animal might help you write a novel (3)
  9. 17. the first philosopher to put 'being', 'knowing' and 'acting' into one coherent system (5)
  10. 19. the name given to building as high and as quickly as possible in Fortnite (8)