2011-01-30

The magic School Bas and the Electric Field Trip

This book is written electricity. I felt that as if I really go to power plant. And so, I talk about electricity.
Most power plant use heat to make electricity. they burn fuels such as coal, oil, or natural gus. This good points is fuel-burning plants can make huge amounts of power. On the other hand, bad point is they all make air pollution. Some plants get heat from nuclear reactors. The good point is these make huge amounts of power without air pollution. The bad point is they create nuclear wastes. Back at making electricity, fuel is anything we burn to make energy. Dump truck tipped up, and trumbling down the coal chute. Overhead there was a metal pipe with water in it. The fire was making the water boil. And the boiling water was turning into steam. The steam was travelling at high speed. It is through the pipe and into the next room in the power plant. There was only one thing in the room- an enormous machine called a tribine. It had blades like a fan, and when the steam pushed on the blades, the the turbine spun around. The turbine made a mental shaft spin, too. It spun around the shaft and slid along to the next part of the power plant. The shaft led it to the generator- the part of the plant that actually makes electricity. This generator was really big. On the outside were coils of wire. On the inside was a magnet. The shaft turned the magnet, and the moving magnet made electric current run in the wire. Next the electrons got smaller. On the way it passed transforms, devices that made the voltage in the higher or lower. Higher voltage helps the current travel the long distance from the plant to the places that will use the electricity. Lower voltages are used in small buildings and homes.
In this way, electron is made and used. (325 words) (3.5 points)(remaining 5.2 points)

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