Solar Energy

2. The part of a shadow surrounding the darkest part
3. Either of the two times of the year when the sun is at its greatest distance from the equator
9. a line of latitude about 23 degrees North of the equator
15. An imaginary circle around the middle of the earth, halfway between the North Pole and the South Pole
16. The day of the year that marks the beginning of fall in the Northern hemisphere
18. Refers to the spinning of our planet on its axis which takes 24 hours.
19. 66.5 degrees north latitude
20. the blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
22. shortest day of the year
23. longest day of the year
24. The two days of the year on which neither hemisphere is tilted toward or away from the sun
25. earth is tilted in space by about 23.5 degrees on average and is responsible for earth's seasons.

1. This is the elliptical orbit of the Earth around the Sun. It takes 365.25 days to complete one orbit.
4. a line of latitude about 23 degrees South of the equator
5. Sunlight that strikes Earth from straight overhead; vertical rays.
6. light rays that do not hit the Earth straight on
7. The partial or total blocking of one object in space by another
8. The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth.
10. 66.5 degrees south latitude
11. the day of the year that marks the beginning of spring in the northern hemisphere
12. A typical star that is the source of light and heat for the planets in the solar system.
13. The darkest part of a shadow
14. continuous daylight, a time when the sun is visible at midnight during the summer in either the Arctic or Antarctic Circle
17. Period in the polar regions in winter when the sun does not rise
21. An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates