# Shared Flashcard Set

## Details

Principles & Laws
N/A
38
Science
02/27/2011

Term
 Ohm's Law
Definition
 the current in a circuit equals the voltage difference divided by the resistance
Term
 Law of Conservation of Energy
Definition
 energy can be transferred from one object to another, but it cannot be created or destroyed
Term
 Law of Conservation of Mass
Definition
 the mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change
Term
 Archimede's Principle
Definition
 the buoyant force on an object is equal to the weight of the fluid displaces by the object
Term
 Pascal's Principle
Definition
 pressure applied to a fluid is transmitted thruout the fluid
Term
 Bernoulli's Principle
Definition
 as the velocity of fluid increases, the pressure exerted by the fluid decreases
Term
 Law of Conservation of Momentum
Definition
 the momentum of an object doesn't change unless its mass, velocity, or both change. momentum, however, can be transferred from one object to another.
Term
 First-class Lever
Definition
 the fulcrum is between the input force and the output force
Term
 Second-class Lever
Definition
 The output force is between the fulcrum and the input force
Term
 Third-class Lever
Definition
 the input force is between the fulcrum and the output force
Term
 Conduction
Definition
 the transfer of energy by collisions between particles in matter
Term
 Convection
Definition
 the transfer of thermal energy in a fluid by the movement of warmer and cooler fluid from place to place
Term
 Insulator
Definition
 a material in which electrons are not able to move easily
Term
 Conservation of Charge
Definition
 charge can be transferred from object to object, but cannot be created or destroyed
Term
 Conductor
Definition
 a material in which electrons are able to move easily
Term
 voltage difference
Definition
 volts
Term
 resistance
Definition
 ohms
Term
 current
Definition
 amperes
Term
 Series Circuit
Definition
 the current only has one loop to flow through
Term
 Open Circuit
Definition
 when the parts of a series circuit are wired one after another and the amount of current is the same through every part so that when any part of a series circuit is disconnected, no current flows through the circuit.
Term
 Parallel Circuits
Definition
 contain two or more branches for current to move through
Term
 Nuclear Fission
Definition
 a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy
Term
 Nuclear Fusion
Definition
 a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy
Term
 Kinetic Theory
Definition
 1. all matter is composed of small particles (atoms, molecules, and ions.)2. these particles are in constant, random motion.3. these particles are colliding with each other and the walls of their container.
Term
 Metallic Bonding
Definition
 when electrons are shared
Term
 Ionic Bonds
Definition
 a type of chemical bond that includes a metal and a nonmetal
Term
 coefficients
Definition
 the numbers to the left of the formulas for the reactants and products. represent the number of units of each substance taking a part in a reaction
Term
 Newton's First Law of Motion
Definition
 states that an object moving at a constant velocity keeps moving at that velocity unless an unbalanced net force acts on it
Term
 Newton's Second Law of Motion
Definition
 states that the accelaration of an object is in the same direction as the net force on the object
Term
 Newton's Third Law of Motion
Definition
 describes an action-reaction pairs this way: to every action force there is an equal and opposite reaction force
Term
 melting point
Definition
 the temperature at which a solid begins to liquefy
Term
 heat of fusion
Definition
 the amount of energy required to change a substance from the solid phase to the liquid phase at its melting point
Term
 boiling point
Definition
 the temperature at which the pressure of the vapor in the liquid is equal to the external pressure acting on the surface of the liquid
Term
 heat of vaporization
Definition
 the amount of energy required for the liguid at its boiling point to become a gas
Term
 condensation
Definition
 The conversion of a vapor or gas to a liquid
Term
 solid
Definition
 closely packed matter with its particles vibrate at its own position
Term
 gas
Definition
 Particles in gas are very far apart and are moving at a very high velocity
Term
 liquid
Definition
 The particles are loosely packed so it does not have a fixed shape and they collide and slide over one another
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