Across
- 4. very good or unusual
- 5. a system for organizing days and months
- 6. an object used to do work
- 8. a device that measures time
- 11. ancient writing carved on something
- 13. finding something new
- 17. to confuse someone
- 18. an idea that explains how things happen
- 19. something strange or unclear
- 20. the study of past events
- 21. something difficult to understand or solve
- 23. a machine that produces movement
Down
- 1. careful study to learn about something
- 2. a carved figure of a person or animal
- 3. a scientist who studies ancient objects
- 7. valuable objects such as gold or jewels
- 8. damaged by rust or age
- 9. the study of the natural world
- 10. very old
- 12. the level of exactness
- 14. facts that help to prove something
- 15. goods carried by a ship
- 16. a set of parts working together
- 21. a large body that orbits a star
- 22. circle of star signs