Across
- 4. relating to or using the natural heat produced inside the Earth
- 6. the distance through the center of an object from one side to the other
- 7. the natural features of an area
- 11. a length equal to 1/1000 meter
- 13. a device shaped like a long tube that you look through in order to see things that are far away
- 14. a long tube that contains lenses and mirrors and that is used by a person in a submarine to see above the surface of the water
- 16. physics that deals with the mechanical action or relations of heat
- 17. a branch of mathematics that deals with points, lines, angles, surfaces, and solids
- 18. the history of a word
- 20. an instrument that is used for listening to someone's heart or lungs
- 21. a stone with a hollow space inside lined with crystals or mineral matter
- 22. an instrument that indicates how fast something is going
Down
- 1. an instrument used for measuring temperature
- 2. an instrument that is used to measure air pressure and predict changes in the weather
- 3. the use of science in solving problems
- 5. the study of diseases and of the changes that they cause
- 8. an automatic device for regulating temperature
- 9. a changing pattern or scene
- 10. the boundary of a closed plane figure
- 11. ideas that are believed by many people but that are not true
- 12. the study of family ancestral lines
- 15. characterized by or formed with evolution of heat
- 16. relating to or caused by heat
- 19. a science that deals with the history of the earth and its life especially as recorded in rocks