Greek and Latin prefixes, roots and suffixes

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Across
  1. 2. meaning 100 years
  2. 3. a picture made with light, starts with 'ph'
  3. 5. got really thirsty, starts with 'de...'
  4. 7. Dr Who does this to move from one place to another
  5. 8. a very large shop
  6. 9. used to take your temperature
  7. 11. a thousand of something, starts with a 'k'
  8. 12. a boat for use under the water
Down
  1. 1. invisible beam of light
  2. 4. water that makes electricity
  3. 5. a book full of words and their meanings
  4. 6. a picture demonstrating how it's done
  5. 10. very very small - you use a ******scope
  6. 13. the study of life in Science lessons
  7. 14. famous people sign them in books
  8. 15. a symbol used in maths meaning the same as