Spellin contract 3

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Across
  1. 2. a character used in writing as a reference
  2. 4. small, rocky celestial body
  3. 6. an electromagnet of extremely high frequency
  4. 7. study of the relationship between organisms and their environment
  5. 9. device used for producing a much larger view of very small objects
  6. 10. study of the influence of stars and planets on human affairs
  7. 12. the use of science in industry to invent useful things or to solve problems
  8. 13. a little world
  9. 15. the scientific study of stars, planets, and other objects in outer space
  10. 17. the science or study of life
  11. 18. study of the earth, rocks, and physical and chemical changes of the earth
Down
  1. 1. an extremely small living thing that can only be seen with a microscope
  2. 2. a person who travels beyond the earth’s atmosphere
  3. 3. the study of speech
  4. 5. small piece of semiconductor material carrying many integrated c
  5. 8. one who studies celestial bodies
  6. 11. study of the origin development, and functioning of human society
  7. 13. study of myths dealing with gods legendary heroes
  8. 14. an event that occurs suddenly causing great loss of life, damage, failure
  9. 16. film on which very small photos pages of newspaper or magazine are stored