Across
- 3. System using radio signals to determine the exact location of places on Earth
- 6. 1,000 years
- 8. an imaginary line that passes through the center of Earth from the North pole to the South pole
- 9. Natural surroundings
- 11. When day and night are identical, or equal in length in both hemispheres
- 12. The study of the Earth and its people
- 13. the layer of oxygen and gasses that surround Earth
- 15. spins
- 17. Computer hardware and software that gather, store, and analyze geographic information and then display it on a screen
- 18. a complete circuit
- 19. The day with the most hours of sunlight
- 20. 10 years
Down
- 1. Earth, 7 other planets, and thousands of of smaller bodies revolve around the sun
- 2. a path a planet follows around the sun
- 4. The exact spot on Earth where a geographic feature is
- 5. Describes where that feature is in relation to the features around it
- 7. 100 years
- 10. a year that contains one of these extra days
- 14. The day with the fewest hours of sunlight
- 16. The low latitude areas near the equator between the Tropic of Cancer and Capricorn