Across
- 1. Of or relating to heat
- 6. an instrument for listening to someone breathing
- 7. An instrument for measuring and indicating temperature
- 10. A collection of myths belonging to a religion
- 13. Relating to, or produced by the internal heat of the earth
- 16. The science that deals with the earth's physical structure
- 18. A small cavity in rock lined with crystals
- 20. A forecast of a person's future
- 21. The total distance around a object
- 22. The branch of biology that deals with organisms
- 23. Mathematics related to points , lines and surfaces
Down
- 2. An optical instrument used for viewing very small objects
- 3. A tenth of a centimetre
- 4. A device that automatically regulates temperature
- 5. The study of the physical features of the earth
- 6. An instrument on a vehicle's dashboard showing its speed
- 8. A thousand metres
- 9. the scientific study of the behavior of animals
- 11. A tube attached to a set of mirrors or prisms
- 12. An instrument measuring atmospheric pressure
- 14. An instrument designed to make distant objects appear near
- 15. The study of the history of words
- 17. A container that keeps a drink or other fluid hot or cold
- 19. The length of one side to the other side of a circle