Types of Energy

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Types of Energy

• 1.Chemical
• potential or kinetic
• in atoms
• electrons (-) negative charge
• protons () positive charge
• neutrons no charge
• charges create chemical energy

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• in our bodies
• contained in atoms -proteins and chemicals
• food converted into energy -metabolism
• exhale heat energy
• measured in calories (kilocalories)
• Kcal the amount of heat required to raise 1
  kilogram of water 10 C
• we burn this as energy

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• in chemicals
• gasoline
• acids
• base
• 2. Heat Energy thermal
• potential and kinetic
• burning coal or oil steam turns a
  turbine
• energy that is produced or is a result of a
• chemical reaction

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• 3. Radiant energy
• potential or kinetic
• SUN -through chemical reactions on the
• sun
• transferred to the earth through the atmosphere
• radio waves, visible light, ultraviolet light

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• 4. Mechanical energy
• potential or kinetic
• machines
• makes work easier for us -mechanical
• advantage
• 5. Electrical energy -wire
• potential or kinetic energy

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• electrons move
• uses a magnetic field
• turns motors, powers all of our electrical
  equipment
• activates electrical activity in storms
• -lightning, static, electrical

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• 6. Sound energy
• vibrations
• waves of pressure
• in air or water
• 7. Nuclear energy
• potential or kinetic
• atoms change
• -split fission, combine fusion
• heat, light, explosions

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Energy in a System

• A system is a set of objects working together to
  accomplish a job
• The amount of energy within a system remains
  constant. It only changes forms
• Example a person creating heat with sticks

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System