school stuff and facts

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Across
  1. 2. the moon is as big as mercury
  2. 5. how fast does light travel per second in kilometers
  3. 7. 89 times 30
  4. 10. eight times seven
  5. 14. what temp does water freeze (fahrenheit)
  6. 15. when light goes through
  7. 16. is too a conjunction
  8. 17. is past a preposition
  9. 20. hottest planet
  10. 21. the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations
  11. 22. the study of the physical features of the earth and its atmosphere
  12. 24. a settler in or inhabitant of a colony.
  13. 25. one plus one
  14. 28. repeated subtraction
  15. 29. when light bounce off
Down
  1. 1. and mechanical what 2 energy does an electric fan use
  2. 2. 23 x 19
  3. 3. study of myths
  4. 4. the second planet to the sun
  5. 6. refraction makes light ____
  6. 8. the dark shape and outline of someone or something visible against a lighter background, especially in dim light
  7. 9. 8th planet from sun
  8. 11. white is every color true or false
  9. 12. is a dolphin a fish
  10. 13. jellyfish have no _____
  11. 18. when it blocks light
  12. 19. which travels faster light or sound
  13. 23. which is a kettle drum
  14. 26. the study of life on earth
  15. 27. what is around the gravity on the moon compared to earth