Across
- 1. When the Earth is closest to the sun
- 4. What hot always goes to
- 5. When the moon gets smaller
- 7. When the moon gets larger
- 8. The transfer of heat by the movement of warmed matter
- 9. Moon is almost full
- 12. The path the earth takes around the sun
- 13. Our star in the solar system
- 17. Has almost the same diameter as Earth.
- 18. longest day of the year
- 19. Caused by the Earth's tilt
- 21. Uses electromagnetic rays
Down
- 2. Equal amount of daylight and darkness
- 3. The Earth turning
- 6. transfer of energy by direct contact of objects with different temperatures
- 10. What cold air does
- 11. Moon is completely dark
- 14. What hot air does
- 15. When the Earth is tilted toward the sun
- 16. Moon is just a sliver
- 20. Number of days it takes the earth to make one revolution