Geography Notes October 10-12th
Geography Notes October 10-12th Geog 1112
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This 2 page Class Notes was uploaded by Alexis on Wednesday October 12, 2016. The Class Notes belongs to Geog 1112 at Georgia State University taught by Noguiera in Fall 2016. Since its upload, it has received 8 views.
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Date Created: 10/12/16
Geography Week Oct 10-12 Notes ~ Chapter 7 Water and Atmospheric Moisture ~ Earth’s Water Origin - Earth’s water originated icy comets and hydrogen-oxygen-laden debris Outgassing: process by which water and water vapor emerge from layers deep within and below the crust Water & Ice – Water density reaches maximum at 4°C Density = mass/volume Damages Due to Volume Expansion During Ice Formation – Breaking Roads Breaking Pipes Damaging vehicle ‘s engine Sinking Ships Humidity – Humidity refers to water vapor in the air. Humidity is primarily a function of the air temperature and the water vapor temperature. Relative Humidity: Actual water vapor in the air/ maximum water vapor possible in the air at that temperature X 100% Maximum Specific Humidity – Maximum specific humidity = maximum possible water vapor per unit mass of air Maximum specific humidity ↑ as the air temperature increases Maximum specific humidity ↓ as the air temperature decreases Saturation and Dew-Point Temperature – As the relative humidity is at the 100%, air is at the saturation At saturation, evaporation rate is equal to condensation rate (equilibrium). The dew-point temperature: temperature at which a given mass of air becomes saturated and net condensation begins to form water droplets. Seasonal Humidity Patterns - Condensation occurs when temperature decreases Example: Buying drink from vending machine, after some time there is water on the outside of bottle after some time - Increase in water vapor increases relative humidity Humidity Instrument (1) Hair Hygrometer – Principle: Human hair changes in length with respect to changes in relative humidity
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