Across
- 4. A method of managing a natural resource in order to avoid spoiling or wasting anything.
- 5. The materials that occur naturally in the environment that are able to be consumed by humans.
- 9. The cause of Day and Night.
- 10. The lighter part of a shadow.
- 13. The shimmering display of lights held by the thermosphere.
- 15. It is the third and coldest layer of the Earth's atmosphere, with temperatures dropping to almost 130 degrees below zero.
- 16. The Moon is full blood red.
- 19. A method for determining the exact location of a point on the globe.
- 20. A local wind system defined by a flow from the sea towards the land during the daytime.
Down
- 1. The Earth revolves around the Sun.
- 2. It is the shortest day of the year in the Northern Hemisphere.
- 3. The most abundant gas in the Earth's atmosphere.
- 6. The use of renewable and non-renewable resources in a manner that satisfies our current needs but does not compromise the future availability of resources.
- 7. It occurs when only some of the Sunlight is blocked by the Moon.
- 8. The definition is seasonal winds.
- 11. The global address of a place.
- 12. It divides the Earth into the Eastern Hemisphere and the Western Hemisphere.
- 14. The Latin meaning of the word is “equal night”.
- 17. The average conditions of a certain place over a long period of time.
- 18. The center and a smaller, darker shadow.