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Scott Foresman:Ch14 Forms of energy

ability to do work or cause a change energy
energy due to motion kinetic energy
energy that is not causing any changes now, but could cause changes in the future. Potential Energy
energy that travels through space in the form of light and other types of energy. electromagnetic radiation
the total of all the kinetic and potential energy of the atoms in an object. thermal energy
transfer of thermal energy between objects that are in contact. conduction
the movement of warm liquids or gases to cooler areas. convection
three ways that heat moves conduction, convection and radiation
movement of energy by electromagnetic waves radiation
bends light light rays to make objects look larger. Thickest in the middle. convex lens
thinner in the middle than the edges, It can bend light rays to make an object look smaller. concave lens
bouncing of light or wave from a surface. ex: mirror...light still moves in a straight line. refelction
bending of light or waves as it passes from one material to another. ex: when light enters a prism refraction
sound moves slowest through what materials areas of dry and cool air.
sound waves move fastest through what materials through hot substances
what happens when sound waves in air hit a surface such as a wall or cliff? some of the waves bounce or reflect back = echo
sound is a wave of vibrations that spreads from its source. sound energy
how do sound waves travel crests and frequency
sound is measured through what? decibels
When an object has its greatest potential energy? stretched rubber band, match box cars positioned on a track, hanging metal ball.
When is nuclear energy released? when a proton is knocked out of an atoms nucleus.
Created by: jmgareau