Forecasting the Weather

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What is a barometer?

A barometer is an instrument used to measure air pressure.

What information can you get from a station model?

A station model gives you the location of a weather station as well as the weather data collected at that station.

Meteorologists have many sophisticated tools to help them forecast the weather. However, weather forecasts are still sometimes incorrect. Why do you think this is the case?

Many different factors affect weather and the can all change rapidly. Also, despite computers, satellites, and other technology, humans must still interpret data and can make errors.

measures temperature

thermometer

A barometer is used to measure air pressure.

true

indicates wind direction

weather vane

Weather maps contain several standard symbols to convey information about the weather. Explain how to interpret three of those symbols.

Isobars are lines that connect areas of equal pressure. Fronts are represented by colored lines. Areas of high or low pressure are indicated by a large, capital H or L.

Lines on a weather map that connect areas of equal air pressure are

isobars

can track storms at different altitudes

radar

The location of a weather station and the data collected there is represented by a(n)

station model

Radar can be used to detect the location and movement of precipitation.

true

What is the function of an anemometer?

An anemometer measures wind speed.

Why are so many station models used to gather weather data in the United States?

Because the country is so large, and Earth's atmosphere is constantly changing, we need data from many stations to make accurate forecasts.

Give examples of three occupations in which weather forecasts are essential.

Farmers, airplane pilots, and space scientists all need accurate weather forecasts.

How can radar be used to forecast weather?

Radar can be used to track the location, amount, and movement of precipitation.

What advantage do weather satellites have over ground-based weather stations?

Satellites can gather weather data from much higher altitudes than land-based instruments can.

What are two tools that can be used to measure wind direction?

Wind direction can be measured using a windsock or a weather vane.

measures wind speed

anemometer

measures air pressure

barometer

A barometer can track the activity of storms at different altitudes.

false


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