Across
- 3. arranged in time order
- 4. looking good in photos
- 5. all the places on Earth where life exists
- 7. the study of Earth's ;and, water, and features
- 10. related to shapes like circles, squares, and triangles
- 11. the study of weather and the atmosphere
- 12. when two sides of something are the same
- 13. the study of how living things interact with their environment
- 14. something that happens again and again over a long time
- 18. to make things happen at the same time
- 19. having or relating to the Earth as the center
Down
- 1. a device that uses light to make something work
- 2. a rule or limit that controls what something can do
- 6. a relationship where two things help each other
- 8. a paper copy made using a machine with light
- 9. a tool in a car that measures distance traveled
- 10. the study of rocks, soil, and Earth's structure
- 15. the order in which events happen
- 16. a tool in a car that shows how fast you're going
- 17. a tiny particle of light