Across
- 1. walked slowly or aimlessly
- 5. clear or complete understanding of a situation
- 7. word with a Greek root meaning "the study of"
- 8. an entry or doorway
- 11. an exciting experience
- 12. the smallest living things
- 13. vehicles used to explore a planet's surface
- 14. word with a Greek root meaning "time"
Down
- 2. dangerous energy rays that cannot be seen
- 3. a group of animals living in one place
- 4. word with a Greek root meaning "light"
- 6. word with a Greek root meaning "to measure
- 9. devices that detect changes in light, moisture, or other physical condition
- 10. scientists who study life in the universe
- 15. having an interest to learn about something
