Across
- 2. “_______ directions”
- 5. Another name for an orbit
- 6. The shape of a planetary orbit
- 9. The centerline through an object
- 11. An imaginary line that divides the Earth into two hemispheres
- 12. Liquids and solids formed from the air
- 14. Happens every March and September
- 15. The scientist who discovered laws of planetary motion
- 18. The northern or southern half of Earth.
- 19. Written during the year without summer
- 20. Air and gases surrounding Earth
- 21. Imaginary horizontal lines that tell you how far north or south you are
Down
- 1. Long term atmospheric conditions
- 3. A repeating pattern of changing weather
- 4. This star helps prove that Earth is tilted at an angle.
- 7. Approaching at an angle other than 90 degrees
- 8. Earth does this every 24 hours
- 10. The longest and shortest day of the year
- 12. The northern and southern tips of the planet
- 13. Short term atmospheric conditions
- 16. Imaginary vertical lines that tell you how far east or west you are
- 17. When a planet is closest to the star it orbits.
