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Unit 5 Lessons 1,2,3

Energy, Waves, Sound, Light

energy the ability to cause change
kinetic energy energy of motion
potential energy the energy stored in an object or a material
law of conservation of energy a physical law that states that energy may change form but it cannot be created or destroyed
chemical potential energy energy stored in a material as a result of chemical bonds
elastic potential energy energy stored in something that can stretch or compress
gravitational potential energy energy stored in objects due to their position above Earth's surface
mechanical energy energy of moving parts of a machine
sound wave a compressional wave produced by vibrations of matter
wave a disturbance that transfers energy from one point to another
wavelength the distance between two waves' crests or two waves' troughs
amplitude the height of a wave from its trough or crest to its midpoint
frequency a measure of how many wave crests or troughs pass a given point in one unit of time
law of reflection physical law that states that an angle between an incoming light ray and a surface is equal to the angle between the reflected light ray and the same surface
transparent allowing light to pass through with almost no distortion
translucent allowing some light to travel through and blocking some light or bouncing it in different directions
opaque not allowing light to pass through
refraction the change in direction of a wave because of a change in the medium it is traveling through
transmission (light) the process through which light travels through an object without being absorbed
reflection the bouncing of a wave off an object, changing its direction of travel
absorption the process of taking in or soaking up light
Created by: akguidry