Down
| 1. | Earth is closest to the sun on the third day of ____. |
| 2. | The weight of air of the atmosphere pressing down on Earth. (2 words) |
| 5. | A wind blowing from the south to the north is call a ____ wind. |
| 7. | The season in the Southern Hemisphere when the North Pole is tilted toward the Sun. |
| 8. | The number of miles a thunderstorm is from you can be calculated by counting the number of seconds between the lighting and thunder. The number of seconds divided by ____ is the approximate number of miles the thunderstorm is from you. |
| 10. | Thunder travels at the speed of ____. |
| 12. | 
Thin and wispy clouds that are high in the sky. They are often formed ahead of a storm (usually an advancing warm front). These clouds are thin enough that the sun and moon can usually shine light through them. |
| 13. | This can be caused by intense rainfall, the failure of a dam, or the thaw of an ice jam. (2 words) |
| 15. | An imaginary line that divides Earth between its two hemispheres. |
| 18. | The earth ___ on its axis once every 24 hours. |
| 20. | In the winter, the Sun's rays strike Earth at a greater ____ than during the winter. |
| 21. | Strong tornados form in a low cloud that lies just below a thunderstorm, known as a ____ cloud. |
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Across
| 2. | A device that can be used to measure wind speed. |
| 3. | When water changes among its gas, liquid, or solid phases, ____ is either added or taken away. |
| 4. | A device that measures precipitation. (2 words) |
| 6. | The rise in the earth's temperature that may be a result of the increase of chlorofluorocarbons (CFCs) in the air. (2 words) |
| 9. | The season in the Northern Hemisphere when the North Pole is tilted toward the Sun. |
| 11. | Lightning travels at the speed of ____. |
| 14. | Night and day occur on Earth because of the Earth's ____. |
| 16. | A type of front where the colder air advances and takes over the warmer air. |
| 17. | 
Layered or stratified clouds. (2 words) |
| 19. | In the northern hemisphere, vernal (or spring) equinox occurs on ____ 20. |
| 22. | ____-pressure areas usually bring dry weather. |
| 23. | When water is in the form of a gas in the atmosphere, it is known as ____. (2 words) |
| 24. | 
Clouds that are high in the sky and can be a sign that precipitation is on the way. They are usually thin and often have a fibrous appearance. |
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