| A | B |
| Altitude | The height above sea level. |
| El Nino | Weaker than average Trade Winds in the Pacific Ocean that causes a warming of the surface water of the eastern and central Pacific Ocean. |
| Glaciation | A period of global cooling during which continental ice sheets and glaciers form and expand. |
| Global Warming | A gradual increase in the overall temperature of the earth's atmosphere attributed to increased levels of carbon dioxide. |
| Greenhouse Effect | A warming of the surface and lower atmosphere of a planet caused by the conversion of solar radiation into heat. |
| Industrialization | One of the principle causes of global warming due to increased pollutants in the atmosphere. |
| La Nina | Stronger than average Trade Winds in the Pacific Ocean that causes a cooling of the surface water of the eastern and central Pacific Ocean. |
| Ocean Acidification | A decrease in the pH of the ocean due to the absorption of carbon dioxide from the atmosphere. |
| Solar Flare | A sudden eruption of intense high-energy radiation from the sun's surface. |
| Sunspots | Darker and cooler regions that form on the Sun's surface. Associated with a warming period on Earth. |
| Climate | The long-term pattern of weather in a particular area. |