Friday, April 18, 2008

Why does the earth have weather?

The Earth has weather because of heat, water, atmosphere, and winds.

One reason the Earth has weather is heat no heat no movement theory. There are three ways to transfer heat.
1. Conduction: energy transfered by direct contact.
2. Radiation: energy transfered by light waves.
3. Convection: energy transfered by the heating and cooling of fluids.





The second reason the Earth has weather is wind. The winds of a region are shaped by the geography of the land.

Global winds: The jet stream and the low pressures that form underneath them create the conditions for storms.
Coriolis effect: The Earth's rotation deflects matter in motion. It directs global winds, ocean currents and hurricanes.



The third reason Earth has weather is water. Water is the fuel of weather.
Precipitation can be a solid, liquid or gas such as snow, rain or dew. The size of the precipitation indicates the different routes of condensation in clouds. Water can exist as a liquid, solid or gas on Earth. The water on Earth is in constant motion, this is called the water cycle.




The last reason Earth has weather is it's atmosphere no atmosphere no weather. Air pressure drops as you get farther from the surface. tempature in the troposphere drops as you get farther from the surface.Almost all of the Earths carbom dioxide, water vapor, clouds, air pollution, weather and life forms are found here.

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