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| 1 | This is the boundary between the Polar cell and the Ferrel cell. | 
 
 
| 2 | The balance between incoming solar radiation and outgoing radiation from the planet. | 
 
 
| 3 | This gas makes up approximately 78% of the volume of dry air. | 
 
 
| 4 | Lines drawn on a synoptic weather map, joining points of equal pressure. | 
 
 
| 6 | The lowest layer of the atmosphere where all the earth's weather takes place. | 
 
 
| 7 | The hour-by-hour state of the atmosphere in any one place. | 
 
 
| 9 | The use of the annual growth rings on trees to infer past climatic conditions. | 
 
 
| 15 | This tropical revolving storm struck New Orleans in August 2005. | 
 
 
| 17 | The city in the Phillipines most seriously affected by Typhoon Haiyan | 
 
 
| 19 | Rainfall resulting from the uplift and subsequent cooling of air over high ground. | 
 
 
| 20 | The mixture of gases surrounding the earth. | 
 
 
| 21 | A measure of solar radiation energy received on a given surface area in a given time. | 
 
 
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