Across
- 4. a imaginary line running through earth
- 5. when the sun moon and earth are in a straight line
- 7. change in water level
- 8. spinning on a axis
- 9. when earth moon and sun are at a 90 degree angle
- 12. line of latitude
- 13. exists outside earth atmosphere
- 15. the moon orbits earth
- 16. period of time during the year
Down
- 1. how hot or cold something is
- 2. the force that draws things together
- 3. a measure of the intensity of light
- 6. imaginary line that runs east to west around earth
- 8. move in a circle
- 10. when both day and night are equal time
- 11. changes in the atmosphere
- 14. happens twice a year