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Energy,Energy is defined as the ability to produce change or do work, and…
Energy,Energy is defined as the ability to produce change or do work, and that
work can be divided into several main tasks we easily recognize:
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Conservation of energy means something quite different.The law of conservation of energy says energy is neither created nor destroyed
Forms of energy
Kinetic energy is motion—the motion of waves, electrons, atoms,
molecules, substances, and objects.
Potential energy is stored energy and the energy of position, or
gravitational potential energy.
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Nuclear energy is energy stored in the nucleus of an atom—the energy
that binds the nucleus together.
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Motion energy or mechanical energy is the movement of objects and
substances from one place to another.
Thermal energy, which is often described as heat, is the internal
energy in substances—the
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This is an example of gravitationel energy
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Efficiency
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system. In theory, a 100 percent energy efficient machine would change
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Sources of Energy
Nonrenewable energy sources include coal, petroleum, natural gas,
propane, and uranium. They are used to generate electricity, to heat
our homes, to move our cars, and to manufacture products from candy
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Renewable energy sources include biomass, geothermal, hydropower,
solar, and wind. They are called renewable energy sources because their
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because it is a
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use another energy source to make it. In the United States, coal is the
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Energy consumption
Every day, the average American uses about as much energy as is
stored in a little more than seven gallons of gasoline.
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BTU what is it?
With British thermal units (Btu),
that’s how. The energy contained in gasoline, wood, or other
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Energy Users
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buildings, hospitals, stores, restaurants, and schools.
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The industrial sector includes manufacturing, construction, mining,
farming, fishing, and forestry.
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The transportation sector refers to energy consumption by cars, buses,
trucks, trains, ships, and airplanes.
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