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Objective: To identify the 6 forms of energy in order to recognize the forms in daily life.

Energy Note: How can energy be recognized in our surroundings?

Drill: 1. Take out yesterday’s ditto and your

6 cards2. Wait for directions.

Forms of Energy

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The examples of energy you have read about so far involve objects being moved or physically changed. But both kinetic energy and potential energy have a variety of different forms. Some of the major forms of energy are mechanical energy, thermal energy, chemical energy, electrical energy, electromagnetic energy, and nuclear energy.

Forms of Energy

*Forms of Energy*Mechanical

*Heat/Thermal*Chemical*Electrical*Electromagnetic*Nuclear

Mechanical Energy

*Energy associated with the motion or position of an object*Sound*Anything moving*KE or PE*Not 100% efficient much lost to heat*Ex – a jumping frog

- a pendulum

Heat/Thermal Energy

*The internal motion of an object’s atoms and molecules.*Measured by temperature.*When the thermal energy of an object increases, its particles move faster causing a temperature increase.*KE only*Example – ice cream melting

– forest fire

Chemical Energy

*Energy stored by chemical bonds in compounds.

*When bonds are broken energy is released.

*When new bonds are formed energy is absorbed

*Stored in foods, fuels and the cells of your body

*PE only

*Examples – an apple

– a piece of coal

Electrical Energy

*Moving electrical charges.

*Electricity

*Powers many of our devices.

*Examples – lightning

- static shock

Electromagnetic Energy

*Energy that travel in waves.*Possess both electrical and magnetic properties.*Can be dangerous*Kinetic energy*Examples - light - ultraviolet radiation

- x-rays - gamma rays

Nuclear Energy

*Energy stored in center(nucleus) of an atom*Released in fission (splitting the nucleus)*Released In fusion (joining several nuclei together)*The sun is powered by this*Most powerful

*PE only

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HOMEWORK

Study and review your information.

Forms of Energy