home work

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Across
  1. 1. Geometry
  2. 6. Thermometer
  3. 8. Millimeter
  4. 11. Thermos
  5. 12. Mythology
  6. 13. Kilometer
  7. 14. Telescope
  8. 16. Geology
  9. 17. Geode
Down
  1. 1. Geothermal
  2. 2. Perimeter
  3. 3. thermal
  4. 4. stethoscope
  5. 5. Thermostat
  6. 7. Periscope
  7. 8. Microscope
  8. 9. Barometer
  9. 10. Etymology
  10. 15. Ecologe