Topics: Renewable energy, Energy, Potential energy Pages: 5 (1465 words) Published: July 16, 2013
Topics Page No ENERGY

Energy is one of the most fundamental parts of our universe. We use energy to do work. Energy lights our cities. Energy powers our vehicles, trains, planes and rockets. Energy warms our homes, cooks our food, plays our music, gives us pictures on television. Energy powers machinery in factories and tractors on a farm. Energy from the sun gives us light during the day. It dries our clothes when they're hanging outside on a clothes line. It helps plants grow. Energy stored in plants is eaten by animals, giving them energy. And predator animals eat their prey, which gives the predator animal energy. Everything we do is connected to energy in one form or another. Energy is defined as:  "the ability to do work.

Types of Energy
Energy exists in two states, potential and kinetic. Potential energy is stored energy that has the potential future ability to do a new task. A boulder that sits on the hill is not actively doing any work but has the capacity to do so because of its position. When gravity causes the boulder to roll down the hill, boulder's potential energy turns into kinetic energy. kinetic energy, the energy of motion, is the form of energy that performs a task. Kinetic energy and potential energy can exist in many different forms. Hence it is important to know the different types of energy.

Potential Energy
The literal meaning of potential is something stored and available for any act or work. We call a person who is capable in some way as a potential person. A potential energy of an object is the energy acquired by it by the virtue of its position and an energy which is readily available for use.Potential energy is broadly classified into two types: 1. Mechanical Potential Energy

2. Electrical Potential Energy (more specifically electrostatic)

Mechanical Type of Potential Energy is acquired by an object by virtue of its height above earth. Electrostatic Potential Energy is the energy by means of electrical voltage (also called as electric potential) that is built on an object due to electrostatic induction.

Kinetic Energy

Like potential energy is defined to be an energy by virtue of its position of an object, kinetic energy is defined to be an energy by virtue of its motion of an object.

Most of the time the two terms are referring to sources of energy: Renewable sources are sources of energy that can be reused or that will continue regardless of you using them: power from the Sun, power from waves, power from wind. Nonrenewable sources are sources of energy that have a limited supply and will run out, and not be able to be used in the future: Oil, Coal, Gas.

1. Solar Energy – Harnessing the sun’s powerful energy is definitely not something new. Capturing the radiant light and heat from the sun has been practiced since ancient times. Since the rapid evolution of technology, we are now able to trap the sun’s rays into solar cells 2. Wind Energy--The energy coming from the wind supercharges the blades of the wind turbines. 3. Geothermal – Geothermal energy is energy obtained by tapping heat from the earth itself. 4. Hydroelectricity – The idea here is to make use of the kinetic energy of water. To make sure that there is a steady flow of power being produced, a dam has to be built to retain the water. If there is a need for more power, the gates of the dam are opened so water can be released. 5. Bio-Fuels – Bio-fuels are also a green energy source. They have been around for a very long time however just lately, people are beginning to take notice.During photosynthesis, plants grow and produce biomass

How Each Type Works
The sun gives out energy in the form of solar energy. The solar energy is in the form of heat radiation...
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