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Weather Watch
| Question | Answer |
|---|---|
| a huge body of air that has similar temperatures, humidity, and air pressure at any given height | air mass |
| the pressure caused by the weight of a column of air pushing down on an area | air pressure |
| elevation above sea level | altitude |
| an instrument used to measure wind speed | anemometer |
| a high pressure center of dry air | anticyclone |
| an instrument used to measure changes in air pressure | barometer |
| wispy, feathery clouds made of ice crystals that form at high levels | cirrus |
| the average, year after year, conditions of temperature, precipitation, winds, and clouds in an area | climate |
| a dry air mass that forms over land | continental air mass |
| the change that Earth's rotation causes in the motion of objects and that explains how winds curve | coriolis effect |
| fluffy, white clouds, usually with flat bottoms that look like rounded piles of cotton | cumulus |
| a swirling center of low pressure | cyclone |
| the temperature at which condensation begins | dew point |
| long periods of low precipitation | droughts |
| the boundary where unlike air masses meet but do not mix | front |
| winds that blow steadily from specific directions over long distances | global winds |
| the amount of water vapor in a given volume of air | humidity |
| a tropical storm that has winds of about 119 kilometers per hour or higher | hurricane |
| a line on a weather map that joins places that have the same air pressure | isobar |
| a line on a weather map that joins places that have the same temperatures | isotherm |
| bands of high speed winds about 10 kilometers above the Earth's surface | jet streams |
| the flow of air from land to a body of water | land breeze |
| a sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud, between nearby clouds, or between a cloud and the ground | lightning |
| winds that blow over short distances | local winds |
| a humid air mass that forms over oceans | maritime air mass |
| scientists who study the causes of weather and try to predict it | meteorologists |
| cut off, as in a front where a war air mass is caught between two cooler air masses | occluded |
| a cold air mass that forms north of 50 degrees north latitude or south of 50 degrees south latitude and has high pressure | polar air mass |
| the amount of force pushing on an area | pressure |
| an instrument used to measure precipitation | rain gauge |
| the percentage of water vapor in the air relative to the maximum amount of water vapor that air can contain at a particular temperature | relative humidity |
| the flow of cooler air from an ocean or lake toward land | sea breeze |
| a violent disturbance in the atmosphere | storm |
| clouds that form in flat layer and often cover much of the sky | stratus |
| a measure of how hot or cold an object is compared to a reference point | temperature |
| an instrument used to measure temperature | thermometer |
| a small storm often accompanied by heavy precipitation and frequent thunder and lightning | thuderstorm |
| a rapidly, whirling funnel-shaped cloud that reaches sown to touch Earth's surface | tornado |
| a warm air mass that forms in the tropics and has low air pressure | tropical air mass |
| the condition of Earth's atmosphere at a particular time and place | weather |
| the horizontal movement of air from an area of high pressure to an area of lower pressure | wind |
| a measure of cooling combining temperature and wind speed | wind chill factor |
| an instrument used to measure relative humidity | psychrometer |
Created by:
bconrad
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