energy of motion

stored energy

one kind of energy changed to another kind of energy

energy from the external motion of an object or the forces acting upon the object

energy from the internal motion and forces of the atoms and molecules of an object

law stating that energy can neither be created not destroyed, only transferred

energy moved from one place to another

heat energy

hotness or coldness of an object; measure of kinetic energy in matter

transfer of thermal energy from an object of higher temperature to an object of lower temperature

unit of energy

transfer of thermal of electric energy through direct contact

material that can easily transfer energy

material that cannot easily transfer energy

transfer of heat by moving liquid or gas; forms convection currents

transfer of heat without matter; outward spreading of energy

interaction between electrons and other charged particles

property that allows particles to attract and repel each other

buildup of electric charge

amount of work done to "push" an electric charge from one place to another

one unit of voltage

process that discharges electric charge into the earth

flow of electrons along a circut

machine that converts mechanical energy into electrical energy

device that converts current electricity into another useful form of energy

uninterrupted path of electricity; allows an electrical current to flow

interrupted path of electricity; does not allow electrical current to the flow

back and forth movement that transfers energy

energy caused by a disturbance moving through a substance

substance through which a wave transfers its energy

back-and-forth movement

series of waves

highest point in a wave

lowest point in a wave

where the medium would be if there were no disturbance

wave that transfers energy by oscillating the particles of a medium at right angles with the wave

squeeze together

length of a single wave

measure of a wave's strength, measured from its height to its resting position

number of waves that pass a given point per unit of time

unit used to measure wave frequency

rate at which a wave travels through its medium

wave that bounces off an object

wave that bends when it enters a new medium

giving off light energy

scientist that studies physics

wave made of two transverse waves, one electric and one magnetic, oscillating at right angles to each other; have no need of a medium

empty space with no matter

range of electromagnetic waves of light that the human eye can see

lens that curves outward from the center

lens that curves inward toward the center

transmits light straight through

blocks light transmission

scatters light

study of sound

part of a longitudinal wave in which particles of the medium are spread out

loudness or softness of sound; strength of a sound wave

unit used to measure the intensity of sound

highness or lowness of sound; effect of frequency on the way humans hear sound

range of sound frequencies human can hear

sound reflected from an object

change in position

motion resulting from force

push or pull on an object

property of matter that makes it resist changes in motion

opposing forces that prevent work from being done

a greater force overcomes opposing forces, resulting in work

forces of two objects acting upon one another by direct contact

forces acting without direct contact

pulling force created between a rope or cable and an object

rebounding force created by the compression or stretching of a spring when attached to an object

supportive force of a surface toward an object resting on it

resisting force between two objects rubbing against one another; works against motion

friction between a solid object and a fluid that tends to slow the object

matter that has no definite shape and can flow; liquid or gas

field of influence around a source of noncontact force

having two opposite sides that work differently to create a force field

attractive or repulsive force caused by the polarity or magnetism

attractive or repulsive force caused by the polarity or electric charges

attractive force between any two material objects

pull or gravitational force exerted on an object by another object

unit of force

law stating that the speed and direction of an object do not change unless acted upon by unbalanced forces

measure of distance traveled divided by a unit of time

graph which represents the motion of an object over a period of time

law stating that an object's acceleration is determined by the forces action upon it as well as its mass

change of speed, direction, or both

change in motion to a faster rate

change in motion to a slower rate

quantity of an object's mass, speed, and direction

two objects humping into each other causing energy transfers

law stating that for every action there is an equal and opposite reaction

force applied to an object, pushing or pulling it

equal force in the opposite direction of the action force

reaction force that pushes an object forward

upward force exerted by a fluid on a solid object placed in the fluid

to take the place of

amount of space covering an object

science of shaping objects to allow the smooth flow of fluids around them and reduce drag

structure designed to produce lift

reaction force created by differences in air pressure around a foil

increase of force made possible by a machine

force applied to a machine

force applied by a machine

to turn, like on a hinge

object lifted or moved by a machine

part of a lever from the fulcrum to the input

part of a lever from the fulcrum to the output arm

science to put to practical use

person who uses science to develop technology

process used by engineers to develop technology

characteristics a design must have to function

limitation or boundary for the design process

model of design that is used for testing