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Transcript
ENERGY BOOK USE THE EXAMPLE AT YOUR TABLE TO MAKE YOUR OWN ENERGY BOOK. FILL IN ALL OF THE INFORMATION ON THE APPROPRIATE PAGE. USE YOUR RUBRIC SO THAT YOU CAN ACHIEVE A HIGH GRADE ON YOUR BOOK. HEAT ENERGY Heat energy is the energy associated with the motion of particles in a substance. When there is a lot of heat energy, the particles move fast and there is high temperature When there is little heat energy, the particles move slower and there is low temperature HEAT LAW: DURING A TRANSFER, HEAT ALWAYS MOVE FROM WARMER OBJECT TO COLDER OBJECT SOURCES OF HEAT ENERGY: Sun, burning material, electricity SOLAR ENERGY Energy from the Sun Provides heat and light energy for Earth Plants use solar energy for photosynthesis to make a sugar (their food) Provides almost all of the energy that we use on Earth Source of solar energy -- Sun CHEMICAL ENERGY Energy that is stored in particles of matter Chemical energy can released when these particles react to form new substances Source of chemical energy: Sun ELECTRICAL ENERGY Energy flowing in an electric circuit SOURCES: Batteries, solar energy in solar cells, fuels, hydroelectric energy in generators 2 TYPES OF MECHANICAL ENERGY Mechanical Potential – stored energy due to position of object Stretched rubber band & height of object are examples Water behind a dam has stored potential energy Mechanical Kinetic – energy of motion Faster an object, more kinetic energy Slower the object, less kinetic energy
