Energy

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Energy
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Energy

• The ability to do work or cause changes in matter

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Types of Energy

• Potential Stored energy or the energy of
  position

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Types of Energy

• Kinetic motion energy the motion of waves,
  atoms, molecules, substances, and objects

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Forms of Energy

• Energy comes in many forms such as heat,
  electricity, sound, solar and light.
• Energy can be transformed from one kind to
  another.

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Source of Energy

• Almost all of the energy on Earth started or
  originated with the sun.
• Energy from the sun is called Solar Energy.
• Solar Energy comes in the form of heat or light.

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Heat (Thermal) Energy

• Heat Energy is measured by temperature.

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Light Energy

• Light Energy travels in waves that you see.

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Sound Energy

• Sound energy travels in waves that you hear.

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Electrical Energy

• Electrical Energy is energy caused by the flow of
  electric charges through a conductor.

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Energy Transformation

• Plants use light energy from the sun to make
  food. The light energy has been transformed and
  stored in the plant matter.

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Energy Transformation

• The plants are buried and after millions of years
  turn into fossil fuels.

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Energy Transformation

1. The fossil fuels are burned releasing stored
   energy in the form of heat.

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Energy Transformation

1. The power plant transforms the heat energy into
   electrical energy.

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Energy Transformation

• The electrical energy is moved from the power
  plant to a home. When a lamp is turned on, the
  electrical energy is changed to light and heat
  energy.

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Energy Quiz
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Sample TAKS Question

• Which of these pictures shows electrical energy
  being changed to light and sound energy?
• B.
• C. D.

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Incorrect Answer

• A.
• The fire is transforming energy stored in the
  wood into heat and light energy.

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Correct Answer

• B.
• The television is transforming electrical energy
  into light and sound.

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Incorrect Answer

• C.
• The toaster is transforming electrical energy to
  heat energy.

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Incorrect Answer

• D.
• The windmills are transforming wind energy into
  electrical energy.