| A | B |
|---|
| Gas that makes up 78% of the atmosphere. | Nitrogen |
| First layer of the atomosphere | Troposphere |
| Weight of square inch column of air that extends to space. | 14.7 pounds |
| Force that deflects air to the right in the northern hemisphere. | Coriolis Force |
| Unit of measurement for atmospheric pressure | inches of mercury |
| Height of mercury column at sea level | 29.92 inches |
| 1000 feet of altitude = How many inches of mercury? | 1 |
| Air flows from areas of _____ pressure to _____ pressure. | High/Low |
| Northern Hemisphere flow rotation around a LOW. | Counterclockwise |
| Northern Hemisphere flow rotation around a HIGH. | Clockwise |
| Daytime breeze from water. | Sea Breeze |
| Lines that join points of equal pressure. | Isobars |
| Rising air ____ and ____ as altitude increases. | Expands/Cools |
| Water vapor is lighter/heavier than air. | Lighter |
| Standard temperature lapse rate. | 1.98 C/1000 feet |
| Dry Adiabatic Lapse Rate. | 3 C/1000 feet |
| Increase of temperature with altitude. | Inversion |
| Changing liquid water to water vapor. | Evaporation |
| Changing of water vapor to liquid water. | Condensation |
| Moisture in air compared to how much the air can hold. | Relative Humidity |
| Temperature air reaches saturation. | Dew Point |
| Cloud that begins within 50 feet of the surface. | Fog |
| Middle Clouds start with this prefix. | Alto |
| High Clouds start with this prefix. | Cirro or cirrus |
| This prefix means rain. | Nimbo |
| This prefix means heap. | Cumulo or cumulus |
| Altitude range for middle clouds | 6500 AGL to 20 000 AGL |
| This term means formed in layers. | Strato or stratus |
| Lowest layer of clouds reported as broken or overcast (BKN or OVC). | Ceiling |
| Water particles that form and fall to the ground. | Precipitation |
| Air masses are classified according to _________. | The regions where they orginate. Temperature/Moisture |
| Boundary layer between two air masses. | Front |
| Warm Front |  |
| Cold Front |  |
| Occluded Front |  |
| Stationary Front |  |
| A narrow band of active thunderstorms | Squall Line |
| How often are METARS usually issued? | Hourly |
| In weather reports, the sky is divided into how many segments? | 8 |
| Graphical Area Forecast | GFA |
| Aerodrome Forecast | TAF |
| Aviation Routine Weather Report | METAR |
| Upper Winds and Temperature Forecast | FD |
| Pilot Report | PIREP |
