Properties of the Atmosphere 11.2 Objectives: Define temperature, air pressure, and humidity Explain how each property is measured Define latent heat

Fill in the Notes page & FOLLOW THE DIRECTIONS! Definitions, pictures, and explanations are on the lab desks Use the textbook when told Use the tools to record classroom atmospheric conditions Interactive Notes

a. Measure of thermal energy due to the movement of particles b. Thermometer c. i. Boiling: 100 deg C = 212 deg F Freezing: 0 deg C = 32 deg F (no easy conversion) c. ii. Boiling: 100 deg C = 373 K = 273 (difference of 273) http://www.youtube.com/watch?feature=player_embedded&v=Xy2qVIhTtG8 http://www.huffingtonpost.com/2013/11/21/fahrenheit-celsius-and-kelvin-10-seconds_n_4311951.html?ncid=edlinkusaolp00000003 Temperature

Air Pressure a. Force exerted by air over a particular area b. Barometer c. i. Warm air > cool air c. ii. High-density air > low-density air c. iii. Warm air < cool air d. Air moves from an area of high pressure to an area of low pressure, creating wind Air Pressure

Humidity a. Amount of water vapor in the atmosphere b. i. Hygrometer b. ii. 1. Saturation: max amount of water vapor the air can hold (100%) b. ii. 2. Relative humidity: percentage to show the amount of water vapor compared to the amount needed for saturation c. Latent heat: thermal energy contained in water vapor d. Freezing, deposition, condensation (arrows pointing left) Humidity