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D - Science - Unit 7

Chapter - Predicting the Weather

QuestionAnswer
What is the first step in forecasting weather? to collect data
How is data collected for forecasting weather? simple, direct observations or through the use of instruments
If a barometer shows that the air pressure is falling, what change in the weather can you expect? an approaching low-pressure area, possibly bringing rain or snow
What type of clouds form on warm afternoons when warm air rises? cumulus clouds
If you see cumulus clouds growing larger and taller, what can you expect them to become? cumulonimbus clouds that may produce a thunderstorm
If you can see thin cirrus clouds high in the sky, what might be approaching? a warm front
Who are meteorologists? scientists who study the causes of weather and try to predict it
What do meteorologists use to analyze weather data and to prepare weather forecasts? maps, charts and computers
Where do weather reporters get their information? National Weather Service
What does the National Weather Service use to gather weather data? balloons, satellites, radar, and surface instruments
What are isobars? lines joining places on the map that have the same air pressure
What does Iso mean? equal
What does bar mean? pressure
What are the numbers on the isobars? pressure readings
What are isotherms? lines joining places that have the same temperature
How are isotherms labeled? degrees in Fahrenheit or Celsius
What do standard symbols on weather maps show? fronts, areas of high and low pressure, types of precipitation and temperatures
On a newspaper weather map, what symbol is used to show low pressure areas? the letter L
On a newspaper weather map, what symbol is used to show high pressure areas? the letter H
On a newspaper weather map, what symbol is used to show precipitation? raindrop slanted lines and snowflake symbols
On a newspaper weather map, what symbol is used to show the direction that a cold front is moving? triangles
On a newspaper weather map, what symbol is used to show the direction that a warm front is moving? half-circles
Created by: lprinke