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Chapter 12 Using Energy

Chapter 12 Using Energy. Lesson 1 Heat. Heat - the total amount of thermal energy an object releases Temperature - the measurement of the average energy of molecules 1. How does heat travel?. Conduction – passing of heat through a material while the material stays in place

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Chapter 12 Using Energy

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  1. Chapter 12Using Energy

  2. Lesson 1 Heat • Heat- the total amount of thermal energy an object releases • Temperature- the measurement of the average energy of molecules 1

  3. How does heat travel? • Conduction – passing of heat through a material while the material stays in place • Convection – flow of thermal energy through a liquid or gas, hot rises and cool sinks • Radiation – transfer of energy through electromagnetic rays 1

  4. Lesson 2 Sound • Sound wave – series of rarefactions & compressions through a substance

  5. Medium – substance through which the wave travels *Sound tends to travel with the greatest speed through solids and slowest through gases • Frequency - number of times an object vibrates per second 2

  6. Lesson 3 Light • Photon – tiny bundle of energy by which light travels • Translucent – objects that blur light as it passes through • Image – a “picture” of the light source that light makes bouncing off shiny surfaces

  7. Prism – a way to separate light • Electromagnetism – the way electric & magnetic forces interact 3

  8. Lesson 4 Electricity • Electricity – the movement of electrons

  9. Circuit – formed when an electric current passes through an unbroken path of conductors 4

  10. Lesson 5 Magnetism • Magnetism – the ability of an object to puch or pull on another object that has the magnetic property • Magnetic field – a region of magnetic force around a magnet, represented by lines

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