Thursday, October 4, 2012

Lessons 13 and 14

In lesson 13, we covered the combined gas law. This law is the relationship among the pressure, temperature, and volume of a gas. It's formula us k=PV devised by T. OR P1V1 decided by T1= P2V2 decided by T2. Something important to know is that air temperature and air pressure both decrease with increases in altitude. For weather balloons, gas pressure has a greater effect on gas volume than does gas temperature. That covers most of lesson 13!

In lesson 14, we did a lab and talked more about clouds. Gay Lussac's Law also tells us that when the pressure inside the bottle increased, the temperature also must increase. Clouds form when water vapor in the atmosphere changes phases and forms water droplets. Clouds can also only form when there is enough water vapor present. Clouds form when both air pressure and temperature are low. Low air pressure are associated with fronts, storms, clouds, and precipitation. Warm air pressure are associated with clear skies. Something else important to know is that warm air rises because it is less dense than cold air.

Homework:

 

 

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