Energy Conversions &    ConservationForces, Motion, and Energy        p. 132-141
Conversions• Changing one form of energy to another.  – Kinetic Energy-Thermal, Electrical, Sound, Light  – Potential Ener...
Some conversions of Electrical Energy              Electrical Energy ConversionsHair Dryer    Electrical  Thermal  Sound...
Types(s) of Energy:Heat (thermal) energy inflameLight energy in flameChemical energy in matchused to light it
What is the energy transformation?                • A fire burning.                ___________energy                 ____...
What is the energy transformation?                • An apple                _________energy                 __________ene...
What is the energy transformation?                 • Nuclear Power Plant                 __________energy                ...
What is the energy transformation?              • Desk Lamp              ____________ energy               ______________...
What is the energy transformation?• Kerosene lantern___________ energy __________ energy ___________ energy
Machines-Mechanical Energy• There are simple         • There are complex  machines such as:          machines such as:  – ...
Conservation• Law of conservation of energy• Friction• http://youtu.be/GTVqtGTfIc8
Closed System• Energy is conserved within a closed system  where a group of objects only transfers energy  to each other.
Energy Efficiency• A comparison of the amount of energy before  a conversion with the amount of energy after  a conversion...
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Week 3 power point

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Week 3 power point

  1. 1. Energy Conversions & ConservationForces, Motion, and Energy p. 132-141
  2. 2. Conversions• Changing one form of energy to another. – Kinetic Energy-Thermal, Electrical, Sound, Light – Potential Energy-Chemical, Nuclear • Elastic Potential Energy-Rubber bands; any object that will return to its original shape once it has undergone a potential  kinetic conversion.
  3. 3. Some conversions of Electrical Energy Electrical Energy ConversionsHair Dryer Electrical  Thermal  SoundAlarm Clock Electrical  Light  SoundBattery Chemical  ElectricalLight Bulb Electrical  Light  ThermalBlender Electrical  Kinetic  Sound
  4. 4. Types(s) of Energy:Heat (thermal) energy inflameLight energy in flameChemical energy in matchused to light it
  5. 5. What is the energy transformation? • A fire burning. ___________energy  _________energy
  6. 6. What is the energy transformation? • An apple _________energy  __________energy
  7. 7. What is the energy transformation? • Nuclear Power Plant __________energy  ___________ energy  __________ energy
  8. 8. What is the energy transformation? • Desk Lamp ____________ energy  ______________ energy
  9. 9. What is the energy transformation?• Kerosene lantern___________ energy __________ energy ___________ energy
  10. 10. Machines-Mechanical Energy• There are simple • There are complex machines such as: machines such as: – Screws – Scissors-2 wedges and – Levers-Claw end of a a lever hammer, see saw – Wheelbarrows-lever – Wheel & axle-large and wheel & axle wheel secured to a smaller shaft Complex machines are – Pulley-flagpole formed from 2 or more – Inclined plane-ramp simple machines.
  11. 11. Conservation• Law of conservation of energy• Friction• http://youtu.be/GTVqtGTfIc8
  12. 12. Closed System• Energy is conserved within a closed system where a group of objects only transfers energy to each other.
  13. 13. Energy Efficiency• A comparison of the amount of energy before a conversion with the amount of energy after a conversion. – Remember, every time energy converts it loses friction.

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