By: D. W. , S. R., R. K., and F. B.

Nonrenewable• Chemical energy• Electrical energy• Mechanical Energy• Fossil fuels (coal, oil,

natural gas, and uranium)

Renewable• Wind

• Hydroelectric• solar• biomass• geothermal• nuclear fusion• Hydroelectric fuel

cell

The major forms of energy are mechanical energy, thermal energy, chemical energy,

electrical energy, electromagnetic energy, and nuclear energy.

Chemical energy is energy stored in chemical bonds

An example of chemical energy is burning coal. When the fire is lit, the source of energy for it is the wood or kindling you are using. When the kindling burns, energy is released and heats the coal and its surrounding area. The energy stored in the kindling

is chemical energy.

Electrical energy is energy associated with electric charges.

An example would be a light bulb. The current has kinetic energy and is converted to electrical energy when

going into the light bulb and through the filaments; which lights up the light bulb.

Mechanical energy is the energy associated with the motion and position of everyday objects.

Mechanical energy= Kinetic energy + Potential Energy

An example of mechanical energy is a wind up toy. When the toy is not moving it has potential energy. Work is done when you turn the crank the spring inside has elastic potential energy. When you let go of the springs it

will spring back to its original shape. The toy has mechanical energy and then kinetic.

Fossil fuels are coal, oil, natural gas, and uranium. They come from

underground. They are being used faster than we can replace them. Fossil fuels currently make up a majority of

the worlds energy. They are relatively inexpensive and are usually easy to get to but they create

pollution.

Wind turbines convert wind energy (KE) into electrical energy using a generator. When the wind blows into the fans (shown below) the turbines

rotate to the roto shaft. Then it is converted to electrical energy.

Major Advantages: low cost, no pollution, and you never run out of wind

Major Disadvantages: A lot of space and a big start up cost

Hydroelectric energy is obtained through flowing water. When water flow down a hill its gravitational potential

energy is converted to kinetic energy and is used to turn turbines that are attached to electric generators. Most hydroelectric plants are built on damson rivers. A dam

stops the flow of water storing potential energy which is then converted to KE as it begins to flow.

Major advantages: no pollution and low cost.

Major Disadvantages: it disturbs the natural run of fish and/or animals, you can only have so many plants because

you only have so much water.

Solar energy is sunlight that is converted to usable energy. Sunlight passes through the windows and heats either air or water and then is used to heat houses. Some items run on solar power, like calculators or cars. Sunlight can be converted into electrical energy or heat through solar cells to power certain objects.

Major Advantages: no pollution

Major Disadvantages: you need sunlight

Biomass energy is chemical energy stored in living things( burning wood , corn, and peat). Some corn can be turned into a fuel called ethanol to power

cars.

Major Advantages: low cost, readily available, and

renewableMajor Disadvantages:

pollution and it impacts ecosystems

Geothermal energy is thermal energy stored beneath the Earth’s surface. It is mainly found near volcanoes. Water gets pumped

into the ground and is converted to steam which is then used to generate electricity. It is also found near hot springs.

Major Advantages: No Pollution

Major Disadvantages: not widely available and you

need hot earth

Nuclear fusion: When you combine nuclei to form a more massive nuclei

Nuclear energy is energy stored in atoms

Nuclear Fission: When you split nuclei

Hydroelectric fuel cells generate electricity by reacting hydrogen with oxygen. Hydrogen fuel can be obtained

from water using electricity from solar cells. The ending product is water.

Major Advantages: no pollution

Major Disadvantages: not very efficient

They can be conserved by reducing energy needs and increasing the efficiency of

energy use.

Yes It Can

(EE= Electrical Energy)

The object has kinetic energy when it is falling it gains thermal and

electromagnetic energy. When it lands on the ground it has potential

energy.

They are related because the greater the mass of the object the

greater the KE.

They are closely related because when work is done on an object

energy is transferred to that object. Work is a transfer of

energy.

It depends on mass and acceleration due to gravity.

FormulaPE=mghm=mass

g=gravity(9.8m/s)h=height

When energy changes from one form to another, the total

energy remains unchanged. The law states that energy

cannot be created or destroyed.