- *wave -
the movement of energy through matter of space

- Newton's 1st law of motion -
a scientific law that says: An object at rest remains at rest and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force

- force -
a quality that tends to produce movement or acceleration of a body in the direction of its application; a push or pull (FCAT)

- wavelength -
the distance between crests of a wave (FCAT)

- Newton's 2nd law of motion -
a scientific law that says: The acceleration of an object depends on the mass of the object and the force applied. Expressed mathematically, Newton's second law is stated: Force= mass X acceleration, or force= m x a

- net force -
the overall force acting on an object

- Newton's 3rd law of motion -
a scientific law that says: When one object exerts a force on a second object, the second object exerts an equal and opposite force on the first

- inertia -
the property of an object, due to its mass, by which it resists any change in its position unless overcome by force (FCAT)

- amplitude -
in any periodic function <e.g., a wave> the maximum absolute variation of the function (FCAT)

- balanced force -
when a net force is 0 Newtons

- levers -
a type of simple machine; consists of a rigid bar that pivots about a fulcrum, used to transmit and enhance power or motion (FCAT)

- crest -
the peak or highest point on a wave (FCAT)

- simple machines
screw -
a types of simple machine that consists of an inclined plane wrapped around a cylinder (FCAT)

- trough -
the lowest point on a wave (FCAT)

- unbalanced force -
when the net force on an object is greater than 0 Newtons

- frequency -
the number of cycles or waves per unit time (FCAT)

- gravity -
the observed effect of the force of gravitation (FCAT)

- electrical force -
is the force of attraction or repulsion between charged particles

- inclined plane -
a types of simple machine; a slanted surface that makes it easier to move a mass from a lower point to higher point (FCAT)

- magnetic force -
force exerted by magnetized objects

- pulley -
a types of simple machine; a circular lever, usually a wheel with a groove where a rope can be placed and used to change the direction of a force (FCAT)

- wedge -
a type of simple machine that consists of a inclined plane used to separate two objects (FCAT)

- buoyant force -
the upward force that keeps an object immersed in or floating on a liquid

- wheel and axle -
a type of simple machine that consists of a rod driven through the center of a cylinder that is allowed to rotate freely, yielding a mechanical advantage equal to the cylinder's diameteer (FCAT)

- motion -
an object's change of position over time

- work -
the transfer of energy to an object by using a force that causes the object to move in the direction of the force

- compound machine -
combinations of two or more simple machines

- mechanical advantage -
a number that tells how many times a machine multiplies force

- power -
the rate at which work is done or energy is transformed

- mechanical efficiency -
a quantity, usually expressed as a percentage, that measures the ratio of work output to work input in a machine

- contact forces
friction -
a force that opposes the relative motion of two material surfaces in contact with one another (FCAT)

- tension -
when a force pulls against the materials that make up an object

- buoancy -
upward force that is exerted on an object, causing the object to float

- distance forces
gravity -
the force of attraction between objects that is due to the masses of the object

- magnetic -
having the property of attracting iron and certain other materials by virtue of surrounding field of force (FCAT)

- electric -
a force of attraction or repulsion between charged particles

- Newton -
the SI unit of force (N)

- Joule -
the unit used to express energy; equivalent to the amount of work done by a force of 1 N acting through a distance of 1 m in the direction of the force (symbol, J)

- Watt -
the unit used to express power; equivalent to a joule per second (symbol, W)