Across
- 4. made up of billions of galaxies
- 6. exactly east
- 9. revolve around the sun; their distance from the Sun directly affects their characteristics
- 11. occurs when the moon passes between the Sun and the Earth- only during a new moon
- 13. a circle’s one fixed central
- 14. amount of sunlight received in a location in a day
- 15. when the Sun sometimes looks bigger and sometimes looks smaller
- 16. theory claiming the universe began at one point
- 19. demonstrates that the Earth is rotating
- 20. used to describe the shape of an orbit; has a range of 1 to 0
- 22. 6/21
- 23. actual amount of light a star shines into space
- 26. large system of billions of stars
- 27. when a planet is closest to the Sun in its orbit
- 29. path taken by one body as it revolves around another body
- 30. Sun is directly overhead
Down
- 1. 12/21
- 2. name of the North Star
- 3. one celestial body passes through the shadow of another and blocks the lit portion
- 5. densely packed regions of stars
- 7. a hot, luminous, gaseous celestial body seen by the light they emit
- 8. energy from the sun in the form of radiation
- 10. occurs when the moon passes through Earth’s shadow- only during a full moon
- 12. further from the Sun, the longer it takes to go around the Sun
- 17. when a planet is furthest from the Sun in its orbit
- 18. 9/21
- 21. 3/21
- 24. Sun reaches maximum altitude for its location
- 25. exactly west
- 28. depends on the Angle of Insolation-the angle at which the Sun’s rays hit the surface of Earth