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Science Unit E Ch 3
Chapter 3 Vocabulary
Question | Answer |
---|---|
energy | The ability to cause changes in matter; the ability to do work. |
law of conservation of energy | A law that states that the total amount of energy in a system is always the same, and that energy cannot be created or destroyed. |
kinetic energy | The energy of motion. |
potential energy | The energy that exists due to the position or condition of an object. |
thermal energy | The kinetic energy of moving particles of a substance or object. |
heat | The transfer of thermal energy. |
conduction | The transfer of thermal energy that results from the collision of particles. |
convection` | The transfer of thermal energy through liquids and gases. |
radiation | The transfer of thermal energy as waves. |
magnet | An object which has all the domains pointing in the same direction and magnetic fields that work together. |
electricity | The interaction of electric charges - usually classified as static electricity or current electricity. |
electric energy | The movement of electrons from one place to another; current electricity. |
circuit | The connection needed for current to travel between the poles of two electric energy sources. |
electromagnet | A device made when electric current travels through a wire coiled around a piece of iron. |
chemical energy | A form of potential energy stored in reactants. |
nuclear energy | The energy that holds protons and neutrons together in an atom's nucleus. |
fission | The reaction that releases nuclear energy when a nucleus breaks into two parts. |