Vocabulary

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Across
  1. 2. thing that is most important and needs attention before anything else
  2. 5. a careful test you do to see if something is true
  3. 7. people who offer to do something without expecting to be paid
  4. 10. illness that spreads quickly to a lot of people
  5. 11. an illness or unhealthy condition
  6. 15. an idea that explains how something works or why something happens
  7. 16. send or pass something from one person to another
  8. 17. something you are working hard to achieve
  9. 18. a very small living thing that causes illness
Down
  1. 1. an idea that is suggested as an explanation of something, but that has not yet been proven to be true
  2. 3. inside
  3. 4. act of fighting against a leader or government
  4. 6. flying insects that drink blood from people or animals, able to spread a disease among one another.
  5. 8. room in which a scientist works
  6. 9. people who fight against a leader or government
  7. 12. illness that causes an increase in your body's temperature
  8. 13. facts or information that proves something is true
  9. 14. natural environments