Physical Science Abeka PDF

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Physical Science Abeka study notes I believe for chapter 15, prepwork for test. ...

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Physical Science Study Notes (Abeka Academy)

Current electricity the flow of electrons or other charged particles to another direct current (DC) Electricity that flows in only one direction, without reversing alternating current electricity that flows first in one direction and then the other reversing intervals voltagethe force with which an electric current flows volt the SI unit for voltage current the rate of the charge "flow" amperethe SI unit for current P=VI Power=voltage x Current kilowatt-hour The amount of energy used when 1KW of power is used continuously for 1 hr equals 3.6MJ conductor materials through which current flows easily insulator materials through which current doesn't flow easily resistance the amount a certain objects hinders electron flow ohm the unit for resistance Joule heat the energy used to overcome resistance is converted into heat superconductor A material that allows current to flow through it with no resistance (1) type of material (2) diameter of the conductor (3) length of the conductor (4) temperature factors affecting resistance Ohm's Law States that the current flowing through a conductor is directly proportional to voltage and inversely proportional to the resistance V=IR resistoran electrical device to add to a circuit electric circuit the path that an electric current follows load a device that transforms the energy of the electric current into another useful form of energy closed circuit a circuit that contains a complete path for electrons to flow from the source of current, through the load back to the source Open circuit if a gap is made in the circuit and electrons cannot cross it, however flow ceases and the circuit is described as.... switch a device that opens or closes a circuit short circuit occurs if electricity has the opportunity to take a short cut through a circuit avoiding the load Fuse a narrow strip of metal housed in a protective insulated case circuit breaker an automatic switch that opens when current flowing through it exceeds a predetermined amount Series circuit When loads are arranged so that the electric current flows through each load after another

parallel circuit Loads arranged in separate branches of the circuit and the current is divided among them Incandescent lamp Produces light by heating a thin piece of wire or filament to a very high temperature fluorescent lamp produces light by passing an electric current is through a long tube filled with a low pressure mixture of mercury vapor and argon compact fluorescent lamp (CFL) coiled fluorescent tubes often seen in offices, coiled tubes about the size if s regular incandescent bulb neon lamp an electric discharge lamp filled with neon gas light emitting diodes (LED) Semiconductor devices that emit light which a direct electric current is applied solenoid One simple device that converts electricity to back and forth motion telegraph essentially consists of a switch or key at one end of a long wire and an electromagnetic at the other end relay an electrical switch operated by an electromagnetic loudspeaker a device that converts pulse of electricity into sound waves microphone a device that converts sound waves into pulse of electricity electric motor the most important device for converting electricity into motion battery a group of electrochemical cells connected together as a single source of current electromagnetic induction the ability of magnetism to convert mechanical motion into electric current generator a device that uses electromagnetic induction to produce electricity (MHD) generator a conducting fluid (such as salt water) passes through a magnetic field at high speeds transformer a device that increases or decreases the voltage of alternating current using electromagnetic induction source, conductors, load simple electric circuit contains three parts I=V/R ohm's law Fuse a narrow strip of metal housed in a protective insulated case circuit breaker an automatic switch that opens when current flowing through it exceeds a predetermined amount Series circuit When loads are arranged so that the electric current flows through each load after another parallel circuit Loads arranged in separate branches of the circuit and the current is divided among them Incandescent lamp Produces light by heating a thin piece of wire or filament to a very high temperature fluorescent lamp produces light by passing an electric current is through a long tube filled with a low pressure mixture of mercury vapor and argon compact fluorescent lamp (CFL) coiled fluorescent tubes often seen in offices, coiled tubes about the size if s regular incandescent bulb neon lamp an electric discharge lamp filled with neon gas light emitting diodes (LED) Semiconductor devices that emit light which a direct electric current is applied solenoid One simple device that converts electricity to back and forth motion

telegraph essentially consists of a switch or key at one end of a long wire and an electromagnetic at the other end relay an electrical switch operated by an electromagnetic loudspeaker a device that converts pulse of electricity into sound waves microphone a device that converts sound waves into pulse of electricity electric motor the most important device for converting electricity into motion battery a group of electrochemical cells connected together as a single source of current electromagnetic induction the ability of magnetism to convert mechanical motion into electric current generator a device that uses electromagnetic induction to produce electricity Magnetohydrodynamic generator (MHD) a conducting fluid (such as salt water) passes through a magnetic field at high speeds transformer a device that increases or decreases the voltage of alternating current using electromagnetic induction source, conductors, load simple electric circuit contains three parts I=V/R ohm's law...