Types of energy 7 forms of energy Energy Resources How Electricity is produced.

•Types of energy•7 forms of energy•Energy Resources•How Electricity is produced

• 2 types of energy– Kinetic energy energy in motion, if it is not

moving it does not have kinetic energy.– Potential energy stored energy in an object

due to its position.

2 things that affect kinetic energy

• Speed • Mass

• The more speed the more energy it hasA

B

• The more mass the more energy it has. This is because it takes more energy to move the bowling ball

A

B

Potential energyBall and

chain

Forms of energyMR. SCENT

• M- Mechanical• R- Radiant

• S- Sound• C- Chemical• E- Electric• N- Nuclear• T-Thermal

Mechanical Energy: the energy that puts something in motion. It pulls, pushes, twists, turns and throws.

Your body converts chemical energy in food to mechanical energy in your body.

Radiant Energy: also known as light energy is waves caused by vibrations of electrically charged particles.

Plants use radiant energy from the sun during photosynthesis to make chemical energy for the plant to use

• Radiant energy type of energy light carries. • Light can either be absorbed, transmitted, or

reflected. • If an object absorbs light it will get warmer.

Object Reflecting

light

ObjectTransmitting

light

Object Absorbing

light

light

light

light

Object Absorbing

light

Sound Energy: vibrations or waves caused by something.

Air particles

Sound waves travel through a medium such as air particles, water or wood (radiant energy does not)

• Chemical energy: is when chemicals break apart into new chemicals.

• When you start off with something and end with something different.

Sugar Molecule

Food

energy

• Electric Energy is the energy of moving electrons

• Energy carried through electrical currents is called electrical energy.

• Electricity is measured in voltage.

Generating electrical energy

• Electrical energy is formed by a generator (device that transforms kinetic energy into electrical energy)

How electrical power plants work.Spinning turbines Rotate the Generator Producing electricity

Steam rushes Through turbines

(fan blades)Causing them

to spin.

Boiling water creates Steam which rises

Coal and oil are burned to Create enough heat to boil water.

generator

• Nuclear energy is energy taken from the nucleus of an atom.

• 20% of electrical energy is produced in a nuclear power plant.

Nuclear power plant

nucleusenergy

atom

Nuclear Power

• Energy is released when atoms from the element Uranium (which is radioactive) split apart in a nuclear reaction.

• This radioactive waste can cause serious harm to organism. It remains radioactive for thousands of years. Safe disposal of this waste is important.

• Thermal energy energy that increases with temperature.

Which has the most thermal energy?

A B C

Different kinds of energy can come from 1 source. What types come this…

(chemical)Wax to flame.

(radiant)Flame gives

Off light

(Thermal)Candle gives

Off heat

Different types of energy are being transformed from one to another in

this picture.

Law of conservation of energy.• Energy is not created or destroyed, it just

changes form.

=