Across
- 3. sunlight hitting Earth straight-on, causing warmer temperatures.
- 4. the tilted line Earth spins around.
- 6. planet with seasons lasting about six Earth months.
- 10. latitude receiving direct rays on June 21/22.
- 12. season when a hemisphere is tilted away from the Sun.
- 14. major Martian event used to begin counting Mars years.
- 16. shape of Earth’s orbit.
- 18. primary reason Earth has seasons.
- 20. length of one Earth rotation (rounded).
- 23. season when a hemisphere is tilted toward the Sun.
- 25. point where Earth is closest to the Sun.
Down
- 1. causes day and night as Earth spins on its axis.
- 2. latitude receiving direct rays on December 21/22.
- 5. day when one hemisphere is tilted most toward or away from the Sun.
- 7. movement of objects in the sky caused by Earth’s rotation.
- 8. season occurring when Sun is directly over the equator in March.
- 9. name for one Martian day.
- 11. region experiencing summer in June.
- 13. amount of incoming solar energy.
- 15. Earth’s yearly orbit around the Sun.
- 17. region experiencing winter in June.
- 19. length of one Earth revolution (rounded).
- 21. day when sunlight is equal in both hemispheres.
- 22. point where Earth is farthest from the Sun.
- 24. season occurring when Sun is directly over the equator in September.