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# Period 8 Group 1

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### Period 8 Group 1

1. 1. PRESENTED BY ANTOIN NICHOLSON ĀKĀ RELLZ THE HOME WOOD MILLIONAIRE B.I.R.R.D
2. 2. Relative Humidity <ul><li>Relative Humidity- is the Measure of the amount of water vapor in the air compared to the amount needed for saturation at a specific temperature </li></ul><ul><li>Air at 25*C is saturated when it contains 22g of water vapor per cubic meter of air </li></ul>
3. 3. Dew Point <ul><li>Dew point- The temperature at witch air is saturated and condensation forms </li></ul><ul><li>Air temperature and dew point temperature are two very different things. </li></ul><ul><ul><ul><li>The dew point temperature is the point at which the air must be cooled in order for the air mass to become saturated </li></ul></ul></ul>
4. 4. Dew point(Continued) <ul><li>Dew point is a better &quot;absolute&quot; measure of the air's moisture content. Here's a good example of why: </li></ul><ul><li>Temperature Dew point Relative Humidity 90 80 =67% 100 80 =47% 110 80 =33% </li></ul>
5. 5. !!!!!Fog!!!!! <ul><li>The dew point is also critical when it comes to forecasting fog </li></ul><ul><li>Fog is likely when the surface air temperature and dew point temperature are the same. </li></ul>
6. 6. Why does cooling the air to the dew point cause saturation? <ul><li>The answer is…. </li></ul><ul><ul><li>the cooler the air, the less energy it has. It takes energy for molecules to break free of the liquid bonds </li></ul></ul>
7. 8. Mrs.Welsh’s Period 8 Ya Digg!!!