Mechanical, Electromagnetic, Electrical, TYPES OF ENERGY Mechanical, Electromagnetic, Electrical, Chemical and Thermal
What is Mechanical Energy? Energy due to a object’s motion (kinetic) or position (potential). The bowling ball has mechanical energy. When the ball strikes the pins, mechanical energy is transferred to the pins!
Mechanical = Potential + Kinetic Mechanical energy is total energy an object has (when building up energy or when using it.) The building up energy is potential. The using up is kinetic. When you have a high number of one, you have to have a low number of the other.
Examples of Mechanical Energy
What is Electromagnetic Energy? Light energy Includes energy from gamma rays, xrays, ultraviolet rays, visible light, infrared rays, microwave and radio bands
What is Electrical Energy? Energy caused by the movement of electrons Easily transported through power lines and converted into other forms of energy
What is Chemical Energy? Energy that is available for release from chemical reactions. The chemical bonds in a matchstick store energy that is transformed into thermal energy when the match is struck.
Nuclear Energy Nuclear Fusion Nuclear Fusion The energy of radiation and heat are released when the nuclei of atoms become so close at high speeds that they collide and form a new nucleus.
Nuclear Energy Nuclear Fission Nuclear Fission The energy of radiation and heat are released when the nucleus of an atom decays and becomes the nuclei of other atoms.
Examples of Chemical Energy
What is Thermal Energy? Heat energy The heat energy of an object determines how active its atoms are. A “hot” object is one whose atoms and molecules are excited and show rapid movement. A “cold” object's molecules and atoms will show less movement.
What types of energy are shown below? Mechanical and Thermal Energy (Don’t forget friction)
What type of energy is shown below? Chemical Energy
What types of energy are shown below? Electrical, Mechanical and Electromagnetic Energy
Other Types of Energy Fossil Fuels (non-renewable) Hydroelectric - changing water movement into electricity Solar energy – using a photovoltaic to transform solar energy into electric energy. Geothermal – using hot steam from areas where underground water is heated by hot rocks. Wind – Using the motion of wind (kinetic energy) to change into electricity.
What type of energy is shown below? Chemical Energy (ripening)
What type of energy is shown below? Thermal Energy
Law of Conservation of Energy - You can’t create emery - You can’t destroy energy - ENERGY CAN ONLY CHANGE FORM. Cool Fact: The energy the universe began with is the same amount of energy that exists today and in the future. It just constantly changes form!
Energy Tranformation How does a car change energies? 5 DIFFERENT TIMES!
Energy Transfer Sound (mechanical) Electrical Thermal Mechanical Chemical Electrical Light (Electromagnetic)
THERMAL ENERGY Because of friction, no matter how energy transfers, some of the energy must be used to overcome the heat of friction. So you always have thermal energy. There are 3 ways that you can transfer thermal energy: Conduction Convection and Radiation
Conduction What is it? What doe it look like? Conduction is when heat is transferred through touch. This is how solids transfer heat.
Convection What is it? What doe it look like? Convection is when fluids (gases or liquids) transferred by mixing the fast-moving particles with slower-moving particles. Boiling water and the air/heating system in your house are examples.
Radiation What doe it look like? Radiation is the transfer of heat through empty space. Think about the sun’s rays, or standing in front of a fire. What is it?