Across
- 6. an account of a person's life written by that person
- 8. instrument for measuring temperature
- 11. an optical instrument designed to make distant objects appear nearer
- 14. study of living organisms
- 15. study of animals
- 17. container that keeps liquids hot
- 18. garment that keeps you warm
- 19. study of the earth's physical structure and substance
- 20. an account of someone's life written by someone else
- 21. a metric unit of measurement equal to 1,000 meters
- 22. study of the origin of words
- 23. internal heat of the earth
Down
- 1. a device that regulates temperature
- 2. the continuous line forming the boundary of a closed geometric figure
- 3. a straight line passing from side to side through the center of a body or figure, especially a circle or sphere
- 4. oldest branches of mathematics
- 5. an instrument measuring atmospheric pressure
- 7. one thousandth of a meter
- 9. the study of myths
- 10. laboratory instrument used to examine objects that are too small to be seen by the naked eye
- 12. the study of the physical features of the earth and its atmosphere
- 13. an apparatus consisting of a tube attached to a set of mirrors or prisms
- 16. an instrument on a vehicle's dashboard indicating its speed