absolute zero the zero point on the Kelvin temperature scale, equivalent to -273.15 degrees Celsius atom the smallest particle of an element that retains its identity in a chemical reaction What is a Generator? A device that transforms kinetic energy into electrical energy. Nuclear energy Energy that is stored in the nucleus of an atom. Photovoltaic A device that transforms radiant energy into electrical energy. physical property a quality or condition of a substance that can be observed or measured without changing the substance's composition Fossil Fuels are coal, oil and natural gas. kinetic energy The energy an object has because of its motion matter Anything that has mass and occupies space Nonrenewable resources An energy source that is used up much faster than it can be replaced. molecule a neutral group of atoms joined together by covalent bonds Radiant energy energy carried by light. Renewable resources An energy source that is replenished continually. Geothermal energy Energy form hot water heated underground. Potential energy the energy that exists as a result of position, not motion; stored energy Chemical energy Energy stored in chemical bonds. Law of conservation of energy Energy is never created or destroyed. temperature a measure of the average kinetic energy of particles in matter; determines the direction of heat transfer Thermal energy The energy that an object has when its temperature increases. electrical energy The energy that is carried by an electrical current. heat energy that transfers from one object to another becasue of a temperature difference between the objects Energy The ABILITY to cause change. Most plants use a ____ to turn a generator. turbine ____ is a fossil fuel. Gasoline The form of energy in fossil fuels is ____ energy. chemical A photovoltaic converts ____ energy. radiant to electrical A limiting factor for using nuclear energy is the ____ produced. waste To do work, you need ____________________. energy The kinetic energy of an object depends on its ____________________ and its ____________________. mass & speed The potential energy of an object depends on its ____________________ and its ____________________. height & mass A pizza oven has ____________________ energy. thermal All power plants use a ____________________ to create electricity. generator Burning fossil fuels produces ____________________, which may cause Earth's climate to warm. carbon dioxide ____________________ energy comes from the nuclei of uranium atoms. Nuclear Kinetic energy is the energy of ____________________. motion Most energy sources have some kind of negative consequence. True Unit 3 - Matter and Energy Flashcards
