Activity 2 1-19-11 Weather and Bernouli Principle

Describe some common weather occurences in relation to the gas laws and characteristics we have been exploring.

When the sun heats up the bottom of the earth there is an expansion of molecules which creates wind. When there are clouds and cool air the air contracts. When water from lakes rises the temperature is then cooler and there is cloud formation. At the bottom of a mountain it is windy and from the top to the bottom of the mountain it is cool and then hot.

What is the Bernouli Principle, provide an example or application of this.

The Bernouli Principle says that as the velocity of a fluid increases, the pressure exerted by that fluid decreases.  This principle allows wings on a plane to produce lift and fly. As wings passes through the air, the shape of the wing make the air travel more over the top of the wing. This creates a higher pressure beneath the wing than above it and the pressure difference causes the wing to push upwards and lift is created.

interesting fact- planes climb better in the winter because the air is denser.