1. axis
2. spinning on its axis; example: Earth rotating once every 24 hours
3. orbiting around another object; example: Earth revolving around the Sun
4. 23.5
5. 365
6. Earth’s rotation on its axis
7. day
8. night
9. Polaris
10. 24; Earth
11. Earth’s tilt and its revolution around the Sun
12. toward; away
13. summer
14. December 21, March 21, September 22, June 21
15. (Diagram to be drawn on back)
16. phases
17. Sun
18. 27.3 (or approximately 28)
19. waning
20. waxing
Bonus: (Illustration to be drawn — New Moon: completely dark; Crescent Moon: small sliver lit; Quarter Moon: half lit; Gibbous Moon: mostly lit but not full; Full Moon: completely lit)
Parent Tip: Review the logic above to help your child master the concept of high school earth science worksheet.