Monday, January 25, 2010

Week2_Prompt#2

Did you that fifty percent of the electricity in the U.S is produced by burning coal.The mechanical energy is provided by steam which turns this is connected to the magnet or coil to make it spin.The steam is produced by water being super heated,that's thermal energy.

Coal is a rock that was formed by compressed plants that died millions of years ago. Energy from those plants was stored in the coal. And plants get their energy directly from the sun.Light from the sun to produce sugar from carbon dioxide and water in a process called photosynthesis.
What I learn about in trace electrical energy back to the sun, is that every time one form of energy is converted into another some of it is lost as heat.
We can also convert the light from the sun directly into electricity.




What Is Electrical Energy?
By Jason C. Chavis
Sparks, NV
U.S.A.

Wednesday, January 20, 2010

Week1_Prompt#2

When I bounce the ball up its potential energy. When the ball drops its kinetic energy.
The moment it hits the ground potential energy becomes nathing.The ball bounces when it is stopped by your hands,when you let it go.When the basketball is in your hand, before it is dropped, it has full potential energy. Once that basketball is released from your hands, the potential energy is going to convert to kinetic energy.
What I learn about the kinetic-potential energy conversions that occur when a basketball bounce is alot.
Then the ball reaches your hand and all of the energy is back to potential energy.This cycle continues over and over again.Some of the energy that you bounce the basketball is transferred into sound energy.

Holt, Rinehart, & Winston. (2008). Integrated Science. Austin, TX: Harcourt Education Company.














Wednesday, January 13, 2010

technology in science

Technology is the use of scientific knowledge to solve practical problems, especially in industry and commerce. Science for me is a subject that can help me eversingle day. Also, study of things which exists around us, whose theories and facts have a proof of its own is referred as science.