Waves Crossword

123456789
Across
  1. 1. a transverse wave that can travel without a medium
  2. 4. can be used to kill cancer cells
  3. 5. can be used to take an MRI
  4. 7. can be used to kill bacteria
  5. 8. uses radio waves to track speed
  6. 9. used in a microwave to cook food
Down
  1. 1. model of the waves in order by frequency
  2. 2. can be used to see temperature
  3. 3. absorbed by teeth and bones
  4. 6. the light we can see