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Weather Instruments

Common instruments used to collect weather data

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Weather Instruments

  1. 1. Weather Instruments January 7, 2008
  2. 2. Thermometer <ul><li>Measures air temperature </li></ul><ul><li>When temp increases the liquid inside expands and rises </li></ul><ul><li>When temp decreases the liquid contracts and sinks </li></ul>
  3. 3. Barometer <ul><li>Measures air pressure </li></ul><ul><li>Air pushes down on the liquid in a barometer </li></ul><ul><li>The greater the air pressure the higher the measurement </li></ul>
  4. 4. Wind sock/ Wind vane <ul><li>Shows the direction the wind is blowing </li></ul>
  5. 5. Anemometer <ul><li>Indicates how fast the wind is blowing </li></ul><ul><li>What would one of these do during a tornado? </li></ul>
  6. 6. Weather balloon <ul><li>Carry equipment high into the atmosphere to measure weather conditions </li></ul>
  7. 7. Psychrometer <ul><li>Measures the humidity (or amount of moisture) in the air </li></ul>

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