Big Bang Theory

The Big Bang theory is the prevailing cosmological model that explains the early development of the Universe. According to the Big Bang theory, the Universe was once in an extremely hot and dense state which expanded rapidly. This rapid expansion caused the young Universe to cool and resulted in its present continuously expanding state. According to the most recent measurements and observations,...

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Fossil Fuel

Fossil Fuels are formed due to the anaerobic decomposition of organic matter. Plants and animals buried deep down in the earth's crust decompose in the absence of air under high pressure and temperature. The formation takes millions of years to take place. Fossil Fuels contain high percentage of carbon. The most important of the fossil fuels are Coal, Petroleum and Natural Gas. It was estimated by the Energy Information Administration that...

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Chemical Energy

Chemical energy is the potential of a chemical substance to undergo a transformation through a chemical reaction or, to transform other chemical substances. Breaking or making of chemical bonds involves energy, which may be either absorbed or evolved from a chemical system. Energy that can be released (or absorbed) because of a reaction between a set of chemical substances is equal to the difference between the energy content of the products...

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Magnetosphere

Artistic rendition(not real) A magnetosphere is formed when a stream of charged particles, such as the solar wind, interacts with and is deflected by the intrinsic magnetic field of a planet or similar body. Earth is surrounded by a magnetosphere, as are the other planets with intrinsic magnetic fields: Mercury, Jupiter, Saturn, Uranus, and Neptune. Jupiter's moon Ganymede has...

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Earth as a Magnet

The Earth, like all other magnets also has its own magnetic field that extends from the inner core to outer space. Earth's core as we have studied it to be, is made up of molten iron and other metals which are in liquid state which is a very good conductor. The Earth's magnetic field is like no other permanent magnet because its polarity keeps changing.  At random intervals the Earth's field reverses (the north and south geomagnetic...

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Magnetism

Magnetism is a property of materials that respond at an atomic or subatomic level to an applied magnetic field. Ferromagnetism is the strongest and most familiar type of magnetism. It is responsible for the behavior of permanent magnets, which produce their own persistent magnetic fields, as well as the materials that are attracted to them. Magnetism, at its root, arises from two sources: Electric currents or more...

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Generating Electricity: From the Sun

Before you're able to produce electricity through solar energy, there needs to be some form of solar cell or panel that will be used to absorb the sun's energy. Solar panels are constructed from a semi-conductive material with the most common material of choice being silicon. The semi-conductive material contains electrons which will naturally just stay there not doing anything. When photons (contained within the suns rays) hit a solar cell,...

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Generating Electricity: From Coal

Coal plays a vital role in electricity generation worldwide. Coal-fired power plants currently fuel 41% of global electricity. In some countries, coal fuels a higher percentage of electricity. Steam coal, also known as thermal coal, is used in power stations to generate electricity. Coal is first milled to a fine powder, which increases the surface area and allows it to burn more quickly. In these pulverised coal combustion (PCC) systems,...

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Generating Electricity: From water

There is no life without electricity. Thus man had to find out ways to produce electricity on large scales so as to provide electricity to everyone. Many ways were found to produce electricity but the easiest way to produce was using water. Water which flows carries a huge amount of potential energy which can be converted into electrical energy. The basic idea was to make fall on a magnetic turbine from a great height or to simply let...

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