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Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
Std 7 weather and climate
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Std 7 weather and climate

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  • 1. The Weather Observing and recording Powerpoint Presentation © Pitsford Hall weather station Northamptonshire Grammar School Abridged version without video clips
  • 2. The Weather Station <ul><li>A weather station makes continuous measurements of different aspects of the weather. </li></ul><ul><li>Weather stations use standard instruments so that their readings can be compared. </li></ul>
  • 3. Temperature <ul><li>Temperature is recorded using thermometers housed inside a Stevenson screen </li></ul><ul><li>Weather stations record both air temperature and the temperature of the ground </li></ul>
  • 4. Temperature: The Stevenson Screen <ul><li>Why is the screen painted white? </li></ul><ul><li>Why is it raised on legs above the ground? </li></ul><ul><li>Why has it got louvred sides? </li></ul>
  • 5. Precipitation <ul><li>Rainfall, snow, hail and fog. </li></ul><ul><li>Rainfall is measured in a raingauge. </li></ul><ul><li>Some raingauges record rainfall automatically whilst others are emptied everyday by an observer </li></ul>
  • 6. Wind <ul><li>The direction and strength of the wind are both measured </li></ul><ul><li>A wind vane measures direction </li></ul><ul><li>An anemometer records strength </li></ul><ul><li>Wind strength can also be measured using the Beaufort Scale </li></ul>
  • 7. The Beaufort Scale
  • 8. Pressure <ul><li>Pressure is the weight of the atmosphere </li></ul><ul><li>When air rises pressure falls </li></ul><ul><li>When air sinks pressure increases </li></ul><ul><li>Pressure controls the type of weather </li></ul><ul><li>Barometers and barographs record pressure </li></ul>
  • 9. Recording pressure
  • 10. Sunshine <ul><li>A note is made of the number of hours of bright sunshine each day </li></ul><ul><li>Sunshine is traditionally measured using a Campbell-Stokes sunshine recorder </li></ul>
  • 11. Cloud <ul><li>The amount of the sky obscured by cloud </li></ul><ul><li>Different types of clouds </li></ul><ul><li>Sometimes even the speed and direction in which the clouds are moving are recorded using a nephoscope </li></ul>
  • 12. Cloud Types - Cumulonimbus
  • 13. Cloud Types - Cumulus
  • 14. Cloud Types - Stratus
  • 15. Cloud Types - Cirrus

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