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WEATHER REPORTING INSTRUMENTS

WEATHER REPORTING INSTRUMENTS. BY LEXI GREENBERGER. WHAT ARE WE MEASURING?. We are measuring Wind Wind speed Wind direction We are measuring Precipitation Rain Snow We are measuring Air Pressure High or Low? We are measuring Temperature Hot or Cold. Why do we measure these things?.

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WEATHER REPORTING INSTRUMENTS

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  1. WEATHER REPORTING INSTRUMENTS BY LEXI GREENBERGER

  2. WHAT ARE WE MEASURING? • We are measuring Wind • Wind speed • Wind direction • We are measuring Precipitation • Rain • Snow • We are measuring Air Pressure • High or Low? • We are measuring Temperature • Hot or Cold

  3. Why do we measure these things? • We want to be able to predict and describe the weather • It helps us plan what to wear • It can help us avoid dangerous weather • It can tell how to care for plants and crops

  4. How does a thermometer work? • A thermometer is a glass tube filled with liquid, usually mercury or alcohol • The liquid expands when it is hot and shrinks when it is cool • The tube has numbers on it to tell you what the temperature is by measuring how much of the tube the liquid takes up

  5. What is a cool way to measure wind speed at home • The instrument used to measure wind speed is an anemometer • You can make your own anemometer by gluing a ping pong ball to a string and tying it to a protractor • By measuring the angle of the string on the protractor you can estimate the wind speed!

  6. How do you measure precipitation • Rainfall ismeasured by collecting rain in a rain gauge • Rain gauges are usually about 50 cm tall and are placed on the ground just high enough to avoid splashes • Rain wateris caught in a funnel on top, runs down into a cylinder below where it can be measured

  7. How do we measure air pressure • With a Barometer • It tells you if the air pressure is rising or falling • A rising barometer pressure means sunny and dry weather • A falling barometer pressure means stormy and wet weather

  8. SOURCES • Ehow.com • Ecokids.com • Wizkids.com • Weather by: Brian Cosgrave

  9. THE END !!!!

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