| A | B |
|---|
| acid precipitation | precipitation with a pH of 5 or less |
| air mass | large body of air in which temperature and moisture content are the same |
| climate | average weather conditions of an area over a long period of time |
| clouds | collections of tiny droplets of water suspended in air |
| cold front | movement of a cold air mass into an area of a warm air mass |
| dew point | temperature at which water condenses |
| humidity | amount of moisture in the atmosphere |
| hurricanes | storms that develop over oceans |
| meteorologist | scientist who studies the weather |
| precipitation | rain sleet snow or hail that falls from the atmosphere |
| relative humidity | amount of moisture the air is holding compared to the amount it can hold |
| thunderstorms | storms that occur when warm, moist air is forced up to cold air |
| tornado | strom that forms over land with whirling wind |
| warm front | warm air mass invading a cold air mass |
| warning | a severe weather condition has been spotted |
| watch | issued when conditions are right for severe weather |
| weather | condion of the atmosphere over a short period of time |
| cirrus clouds | feather clouds |
| cumulus clouds | puffy clouds |
| stratus clouds | occur in layers, fog is when it hits the Earth |
| nimbus clouds | storm clouds with ragged edges |
| snow | precipitation formed from water vapor changing directly to a solid |
| sleet | precipitation that forms when rain falls through a layer of cold air |
| hail | precipitation formed when water freezes around ice |
