Energy:

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Energy Types / Sources
BRMS 6th Grade Mrs. Bright (6-5.1)
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6-5.1

• Identify the sources and properties of heat,
  solar, chemical, mechanical, and electrical
  energy.

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Nature of Energy

• Energy can be in many forms!
• You can hear energy as sound.
• You can see energy as light.
• And you can feel it as wind.

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Nature of Energy

• You use energy when you
• hit a softball.
• lift your book bag.
• compress a spring.

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Nature of Energy

• Living organisms need energy for growth and
  movement.

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Nature of Energy

• Energy is involved when
• A bird flies.
• A bomb explodes.
• Electricity flows in a wire.
• Rain falls from the sky.

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What is energy?

• 1. Energy can be defined as the ability to cause
  change in speed, direction, shape or temperature.

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2. What are 5 forms of energy?

• Heat
• Solar
• Chemical
• Electrical
• Mechanical

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3. What are the two States of Energy?

• All forms of energy exists in two main states
• Kinetic (motion)
• Potential (position)
• These are know together as mechanical energy.

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4. The Law of Conservation of Energy

• Energy cannot be created or destroyed it can only
  change form.
• The total amount of energy NEVER changes!!!!!

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The STATES of ENERGYMechanical Energy

• Potential Kinetic

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States of Energy ENERGY OF MOTION

• 1.Kinetic Energy is the energy of motion.
• 2.If an object is NOT movingit doesnt have
  kinetic energy.

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Kinetic Energy

• o 3.The faster an object moves, the more kinetic
  energy it has.
• A moving car has kinetic energy. If the car moves
  faster, it has more kinetic energy.

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Examples of Kinetic Energy
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Kinetic Energy Assessment

• True or False
• ___4. Kinetic energy increases as an object moves
  faster.
• ___5. Kinetic energy is due to motion.
• ___6. A stalled car is an example of kinetic
  energy.

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Potential Energy Energy of Position

• 7. Potential Energy is stored energy.
• In fuel,
• In a battery
• In food.
• A wound up watch.
• An arrow pulled back.
• A book on a shelf.
• A stretched rubber band
• A compressed spring

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Potential Energy

• 8. Potential energy is related to the position
  of an object.
• 9. Water behind a dam has potential energy
  because it can fall down the dam. The higher the
  object the greater the potential energy of the
  object.

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Ball speeds up
Ball slows down
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• http//app.discoveryeducation.com/search

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Potential Energy Assessment

• True or False
• ____ 10. Potential energy is stored energy.
• ____ 11. Potential energy is related to position.
• ____ 12. An arrow flying through the air is an
  example of potential energy.
• ____ 13. Potential energy decreases with height.

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Energy Sources Properties

• Heat Energy
• Solar Energy
• Chemical Energy
• Electrical Energy
• Mechanical Energy

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1.HEAT Energy Notes

• Heat energy is the transfer of thermal energy.
• As heat energy is added to a substance, the
  temperature increases.
• When the temperature increases, the molecules
  move faster.
• The faster the molecules move, the higher the
  temperature.
• Heat is always transferred from a warmer object
  to a colder object.

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HEAT Energy
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HEAT Energy Examples

• O geothermal energy,
• O a cup of coffee
• O a hot spring.

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HEAT Energy Sources

• burning wood
• candle wax
• the Sun
• electricity
• gas

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2.SOLAR Energy Notes

• Energy from the SUN, which provides heat light
  energy for Earth.

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SOLAR Energy Notes

• Solar cells (panels) can be used to convert solar
  energy to electric energy.
• Green plants use solar energy during
  photosynthesis to produce sugar, which contains
  stored chemical energy.
• Most of the energy we use on Earth originally
  came from the sun fossil fuels.

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SOLAR Energy Examples

• Photosynthesis
• Light
• Heat

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SOLAR Energy Source

• The SUN

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3.CHEMICAL Energy Notes

• Chemical energy is energy stored in particles of
  matter.
• Chemical energy can be released.
• This energy will remained stored unless acted on
  by an outside source.

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CHEMICAL Energy Examples/Sources

• Fuel
• (energy is released as light or heat when the
  fuel is burned)

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CHEMICAL Energy Examples/Sources

• Food
• (contains stored chemical energy that your body
  changes to provide energy for your brain, your
  movements, your growth)

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CHEMICAL Energy Examples/Sources

• Batteries have stored chemical energy.

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4.ELECTRICAL Energy Notes

• Electrical energy is the energy flowing in an
  electric circuit.
• Power lines carry energy into your home in the
  form of electricity.

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ELECTRICAL Energy Examples
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ELECTRICAL Energy Sources

• A generator produces hydroelectric energy when a
  coil of wire wrapped around an iron core is
  rotated near a magnet.
• Heating water (by burning fuel) to make steam
• Steam is pressurized in pipes and shot into a
  turbine causing it to turn.
• The turbine is connected to a generator that
  turns makes electricity using magnets.

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ELECTRIC Energy Sources

• From solar energy in solar panels.
• From stored chemical energy in batteries.

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5. MECHANICAL Energy Notes

• Energy due to an objects motion (kinetic)
  position (potential)

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6. Law of Conservation of Energy

• Energy canNOT be created or destroyed
• Energy can change form
• The total amount of energy NEVER changes!

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QUIZ Time

• 1. When you move your arm, your body changes
  chemical energy supplied by food into ___ energy.
• A. Light
• B. Electrical
• C. Mechanical potential
• D. Mechanical kinetic

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QUIZ Time

• 2. According to the Law of Conservation of Energy
  the total amount of energy in the universe ___.
• A. Remains constant
• B. Constantly changes
• C. Increases
• D. Decreases

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QUIZ Time

• 3. Water moving downstream has ___ mechanical
  energy.
• A. Potential
• B. Kinetic