The weather

3. The study of the atmosphere and all its elements, including weather and how to forecast it.(11)
5. Tropical storms with very strong winds and heavy rain. They usually affect warmer parts of the world. (10)
8. The same as cloud but on the surface of the ground (3)
9. An upward current of air, usually within a thundercloud (7)
13. The force exerted by the column of air above a point to the top of the atmosphere (8)
17. A thick grey cloud associated with rain (5-7)
19. Plants breathing. They get water from the ground to help them grow. Some of this water comes out of their leaves and goes out into the air.(13)
20. When it does not rain for a long time (7)
21. A large flash of electricity between the sky and the ground, or between clouds (9)
22. A forecast (9)
23. White ice crystals that cover surfaces, such as grass or roofs, when the air is very cold and the sky is clear of clouds (5)

1. The time of year when the sun is the farthest north or the farthest south (about June 21 and December 21). (8)
2. How damp the air feels (8)
4. A tornado-like formation over water, usually much smaller and less vigorous than a true tornado. They tend to occur most frequently in tropical waters. (10)
6. An instrument that detects and ranges distant objects by measuring the scattering and reflection of radio beams. (5)
7. When vapour in the air gets colder it changes from being a vapour into a liquid which we can see. (12)
10. Similar to mild. It means not too hot, and not too cold. (9)
11. Weather over a long period of time (7)
12. A seasonal wind, found especially in Asia that reverses direction between summer and winter and often brings heavy rains. (7)
14. It takes pictures of the Earth from above, helping scientists understand what the weather is doing and what might happen next. (9)
15. The greatest distance at which one can see and identify objects in the horizontal (10)
16. Water falling from the sky. It is normally rain, but when it is cold, it can fall as snow or hail or sleet. (13)
18. An unstable oxygen compound that is a pollutant at ground level, but that absorbs deadly ultraviolet rays in the stratosphere. (5)