5.6A Forms of Energy Keywords/Question: Notes: What is energy and how do we use it? Energy is the ability to do work. Energy cannot be created or destroyed. ability to do work It is changed from one form to another so that the total amount of energy MELTS never changes. Mechanical energy is the energy of motion, created by physical movement. Pulling a wagon, flowing water, and chewing food are examples of Mechanical mechanical energy. key moving verbs Mechanical energy= potential energy + kinetic energy KE= motion PE= stored Potential energy is energy that is stored; ready for use. Kinetic energy is energy in motion Electrical energy occurs when an electrical charge moves from one object to another. Electrical energy can be converted into thermal, light, mechanical, Electrical or sound energy. key words: switch, on/off Electrical energy is our most widely used form of energy and can be created from renewable or non-renewable of energy. Light is a form of visible energy. Energy from the Sun, lightbulbs, and fires all Light produce light energy. All life and other energy sources are dependent on light key words=visible, see from the Sun. Thermal energy is also known as heat energy. Thermal energy is transferred Thermal by conduction, convection, and radiation. key heat conduction- heat transfer through direct contact- touching a hot stove convection- heat transfer through air or a liquid-heating water up in a pot conduction radiation- transfer of heat through electromagnetic energy. Only heat convection transfer that can go through outer space. radiation Sound energy is produced by vibrations as they pass through a solid, liquid, or gas. Sound Sounds travels at different speeds depending on which medium it is traveling key words=hear/vibration through. Sound energy is a form of mechanical energy (because of the moving vibrations).
5.6A Forms of Energy Keywords/Question: ability to do work MELTS Mechanical key moving verbs KE= motion PE= stored Electrical key words: switch, on/off Light key words=visible, see Thermal key heat conduction convection radiation Sound key words=hear/vibration Notes: What is energy and how do we use it? Energy is the ability to do work. Energy cannot be created or destroyed. It is changed from one form to another so that the total amount of energy never changes. Mechanical energy is the energy of motion, created by physical movement. Pulling a wagon, flowing water, and chewing food are examples of mechanical energy. Mechanical energy= potential energy + kinetic energy Potential energy is energy that is stored; ready for use. Kinetic energy is energy in motion Electrical energy occurs when an electrical charge moves from one object to another. Electrical energy can be converted into thermal, light, mechanical, or sound energy. Electrical energy is our most widely used form of energy and can be created from renewable or non-renewable of energy. Light is a form of visible energy. Energy from the Sun, lightbulbs, and fires all produce light energy. All life and other energy sources are dependent on light from the Sun. Thermal energy is also known as heat energy. Thermal energy is transferred by conduction, convection, and radiation. conduction- heat transfer through direct contact- touching a hot stove convection- heat transfer through air or a liquid-heating water up in a pot radiation- transfer of heat through electromagnetic energy. Only heat transfer that can go through outer space. Sound energy is produced by vibrations as they pass through a solid, liquid, or gas. Sounds travels at different speeds depending on which medium it is traveling through. Sound energy is a form of mechanical energy (because of the moving vibrations).
cornell_notes_5.6a_forms_of_energy.docx