| A | B |
| cloud | A visible Mass of water droplets and ice crystals floating in the troposphere |
| Troposphere | layer of the atmosphere closest to the earth-all weather occurs here. 12-15 km |
| Stratosphere | 2nd layer of the atmosphere-ozone is in the upper part of this layer |
| Mesosphere | 3rd layer of the atmosphere- meteors burn up in this layer |
| Thermosphere | Upper most layer of the atmosphere-hottest layer. Satellites, ISS and space shuttle could be found in this layer. |
| Ozone layer | Heavy oxygen - layer absorbs and deflects UV rays of the sun |
| Cumulus | Puffy, cotton ball like cloud that brings fair weather, sometimes showers. Low, vertical forming cloud. |
| Cumulonimbus | Low to hi level cloud that brings thunder and lightning, hail |
| Stratus | Layered, blanket of clouds-dark bring steady drizzle. Low level cloud. |
| Cirrus | High, thin wispy clouds, bring nice weather, then change in 24 hrs. |
| Evaporation | Process by which liquid water changes to a vapor - a cooling process |
| Condensation nuclei | particles of dust, smoke, salt and chemicals in the air around which water vapor condenses allowing clouds to form. |
| Condensation | Process by which water vapor becomes a liquid. One ingredient of cloud formation |
| Air pressure | Weight of air- decreases with altitude |
| water vapor | water in the air in a gas state. 1 necessary ingredient for cloud formation |
| High to low pressure change | air cools, ingredient for cloud formation |
| Sun | Starts the water cycle and the formation of clouds because of its heat |
| Color, shape and altitude | 3 ways to identify/classify a cloud |
| temperature | measurement of the amount of heat |
| Celsius | metric temperature scale 0-100. |
| Jet stream | fast moving river of air at an elevation of about 25,000-40,000 ft. Moves W to E around the globe. Brings NE its weather. |
| Nimbo | means rain |
| Ci | abbreviation for Cirrus |
| Cb | abbreviation for Cumulonimbus |
| St | abbreviation for Stratus |
| As | abbreviation for Altostratus |
| Ac | abbreviation for Altocumulus |
| Sc | abbreviation for stratocumulus |
| Vertical forming clouds | Cb and Cu |
| 6.5 degrees Celsius | The amount the Temperature changes for every 1000 m rise in altitude in the troposphere |
| Cu | abbreviation for Cumulus |