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How Can We Measure The Weather?
Weather is... the day to day condition of the air around us over a short period of time.
Temperature  <ul><li>Temperature means how hot or cold it is  </li></ul><ul><li>It is usually measured with a thermometer ...
Pressure <ul><li>Pressure is a measure of how heavy the air is. </li></ul><ul><li>Pressure is measured with a barometer in...
Cloud Cover <ul><li>Cloud Cover tells us how much of the sky is covered by clouds. </li></ul><ul><li>It is measured by est...
Wind Speed <ul><li>Wind speed is how fast the wind is blowing. </li></ul><ul><li>An anemometer measures wind speed in mph....
Wind Direction <ul><li>Wind direction is where the wind is blowing from. </li></ul><ul><li>Wind Vane/Wind Sock: measures w...
Rainfall/Precipitation <ul><li>Precipitation is water falling from the sky. </li></ul><ul><li>Rain gauge: measures the amo...
Sunshine <ul><li>Sunshine is light and warmth from the sun. </li></ul><ul><li>A Campbell Stokes Recorder measures sunshine...
Visibility <ul><li>Visibility is how far ahead we can see. </li></ul><ul><li>It is measured using a tape measure or trundl...
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Weather and How it is Measured

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Weather and How it is Measured

  1. 1. How Can We Measure The Weather?
  2. 2. Weather is... the day to day condition of the air around us over a short period of time.
  3. 3. Temperature <ul><li>Temperature means how hot or cold it is </li></ul><ul><li>It is usually measured with a thermometer in degrees centigrade(ºC) </li></ul>
  4. 4. Pressure <ul><li>Pressure is a measure of how heavy the air is. </li></ul><ul><li>Pressure is measured with a barometer in millibars (mb) </li></ul>
  5. 5. Cloud Cover <ul><li>Cloud Cover tells us how much of the sky is covered by clouds. </li></ul><ul><li>It is measured by estimating the amount of cloud cover in eighths. </li></ul>
  6. 6. Wind Speed <ul><li>Wind speed is how fast the wind is blowing. </li></ul><ul><li>An anemometer measures wind speed in mph. </li></ul><ul><li>The most common type looks like a toy windmill. Three cups are fixed to a central shaft and the stronger the wind blows the faster they spin around. The wind speed is shown on a dial, just like a car's speedometer </li></ul>
  7. 7. Wind Direction <ul><li>Wind direction is where the wind is blowing from. </li></ul><ul><li>Wind Vane/Wind Sock: measures wind direction by pointing towards North, East, South or West </li></ul>
  8. 8. Rainfall/Precipitation <ul><li>Precipitation is water falling from the sky. </li></ul><ul><li>Rain gauge: measures the amount of rainfall in mm. Not only does a rain gauge measure rainfall, but also all other forms of precipitation. </li></ul>
  9. 9. Sunshine <ul><li>Sunshine is light and warmth from the sun. </li></ul><ul><li>A Campbell Stokes Recorder measures sunshine. </li></ul><ul><li>This type of recorder is made up of a glass ball which concentrates sunshine on to a thick piece of card. The sunshine then burns a mark on the card which shows the number of hours of sunshine in the day. </li></ul>
  10. 10. Visibility <ul><li>Visibility is how far ahead we can see. </li></ul><ul><li>It is measured using a tape measure or trundle wheel, in metres or kilometres . </li></ul>

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