Unit 3 Summary

Unit 3 was all about how gas pressure, density, temperature, and the number of molecules all relate to one another to give make up the gas laws. These gas laws have significant importance to weather patterns and formation.

Gas Laws

Charles's Law: k=V/T constant k = volume/temperature

Boyle's Law: k=PV constant k = pressure x volume

Gay-Lussac's Law: P=kT pressure = constant k x temperature

Combined Gas Law: k=PV/T constant k = (pressure x volume)/temperature

Ideal Gas Law: PV=nRT (pressure x volume = (number of moles/molecules) x (constant R 0.082) x (temperature)

• For all the gas laws, the temperature has to be in degrees Kelvin

A lot of the weather we experience has to do with phase changes water goes through

• Evaporation- the phase change from liquid to gas
• Condensation- the phase change from gas to liquid
• Freezing- the phase change from liquid to solid

Density is a recurring factor in all aspects of weather including:

• humidity which is the water density in the air
• pressure because the more dense the number of molecules in the air, the higher the pressure
• The warmer the air is the higher the water density can be and exceeding that maximum results in precipitation

Practice Problems

 

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