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Meterology chp 1
| Question | Answer |
|---|---|
| ____is defined as the state of the atmosphere at some place and time. | Weather |
| Climate is defined as weather conditions at some locality averaged over a standard period of ____years | 30 |
| The climate of some locality governs | the type of crops that can be cultivated, the fresh water supply, the average heating and cooling requirements for homes. |
| Depending on local topography, the maiximum range of broadcasts of the NOAA weather radio is about _____ kilometers. | 65 |
| ______is used to describe the weight of the overlying air. | Pressure |
| __________ pressure systems are usually accompanied by fair weather and __________ pressure systems are usually accompanied by stormy weather. | High...............low |
| ____________ is (are) typically found near the center of a high pressure system. | Light winds or calm air |
| Viewed from above in the Northern Hemisphere, surface winds in a high pressure system blow | clockwise and outward. |
| From your experience, weather systems usually cross the United States in | several days. |
| Weather systems in the middle latitudes of the Earth generally move in the direction towards the | east. |
| Viewed from above in the Northern Hemisphere, surface winds blow ___________ about the center of a low pressure system. | counterclockwise and inward |
| Air temperatures tend to be relatively low to the ___________ of a low pressure system | north and west |
| As a general rule, lows that track from west to east across southern Canada produce ___________ precipitation compared to lows that track along the Gulf of Mexico coast. | less |
| An air mass is a huge volume of air that is relatively uniform horizontally in | humidity and temperature |
| A front is a narrow zone of transition between air masses that contrast in | humidity and temperature |
| The temperature and moisture characteristics of an air mass depend on | the properties of the surface over which the air mass resides and travels. |
| Often associated with a front is (are) | ascending air,cloudiness,precipitation. |
| __________ fronts are associated with cloudiness and precipitation over a broad band | Warm |
| At the same humidity (water vapor concentration), a cold air mass is _________ a warm air mass. | denser than |
| Most cloudiness and precipitation associated with a cold front occur as a relatively _________ band along or just ahead of where the front intersects Earth's surface. | narrow |
| In North America, tornadoes are most common | in the central United States |
| The winds in a _________ pressure system bring contrasting air masses together to form fronts. | low |
| A horizontal wind is named for the direction ___________ the wind blows. | from which |
| Typically, the day's ___________ temperature occurs around Sunrise. | minimum |
| Often the day's highest air temperature and lowest relative humidity occur | during early to mid-afternoon. |
| On average, 10 cm of freshly fallen snow melt down to _____ cm of liquid water. | 1.0 |
| A northeast wind blows from the __________ toward the __________. | northeast. . . . . . .southwest |
| The National Weather Service issues a weather __________ when hazardous weather is imminent or actually taking place. | warning |
| A geostationary satellite orbits Earth at a _________ altitude than a polar-orbiting satellite | higher |
| All other factors being equal, temperatures are _________ during clear nights. | coldest |
| All other factors being equal, an overcast sky _________ the day's maximum temperature. | lowers |
| An infrared satellite image is especially useful | at night. |
| On an infrared satellite image, high clouds appear __________ low clouds | brighter than |
| In the portion of the atmosphere where most clouds occur, the air temperature _________ with increasing altitude | drops |
| Clouds appear on __________ satellite images. | visible,infrared, water vapor |
| Weather radar monitors the movement of | precipitation. |
| Meteorologists monitor the movement of water vapor at higher altitudes of the atmosphere using | water vapor satellite imagery. |
| On a water vapor satellite image, dry air is indicated by | areas of black. |
| Weather radar emits pulses of __________ energy that are reflected by precipitation particles (e.g., raindrops, snowflakes). | microwave |
| Weather radar utilizes the _________ effect to monitor the motion of precipitation particles. | Doppler |
| A cloud in contact with the Earth's surface is known as | fog. |
| Wispy-appearing clouds that occur at high altitudes are composed of mostly Wispy-appearing clouds that occur at high altitudes are composed of mostly | tiny ice crystals. |
| __________ clouds occur at relatively high altitudes and have a fibrous or wispy appearance. | Ice-crystal |
| Clouds that form horizontal layers are described as | stratiform. |
| Cumuliform clouds _________ form along or ahead of a cold front. | typically |
| ___________ usually indicate fair weather. | Scattered cumulus clouds |
| Cumulus clouds that exhibit essentially no vertical growth are ___________ to produce precipitation | unlikely |
| A thunderstorm cloud: | cumulonimbus |
| __________ weather is usually associated with cumulonimbus clouds. | Stormy |
| Clouds located at different altitudes __________ move in the same direction indicating __________ in the horizontal wind direction with altitude. | sometimes. . . . . . . no change |
Created by:
clcosentino
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