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Across
  1. 3. a dangerous condition when the body becomes too cold.
  2. 6. the feeling of caring about someone’s suffering or sadness.
  3. 7. a new device or process created by someone’s imagination or skill.
  4. 8. a person who offers to do something without being paid.
  5. 9. a condition caused by losing too much water from the body.
  6. 12. a person who designs or builds machines, structures, or systems.
  7. 13. exact and accurate.
  8. 18. real, true, and honest.
  9. 19. the will to continue trying to do something even if it is difficult.
  10. 20. a person trained to travel and work in space.
Down
  1. 1. an important discovery or progress in knowledge or technology.
  2. 2. when a boat or ship turns over in the water.
  3. 4. having the ability to produce new and original ideas.
  4. 5. showing great courage and bravery.
  5. 10. finding something for the first time.
  6. 11. something that makes progress difficult.
  7. 14. a difficult task or problem that tests ability.
  8. 15. a strong desire to do or achieve something.
  9. 16. a group of people living in the same area or sharing common interests.
  10. 17. something important or difficult that has been done successfully.