Term 3 Flashcards
About this set
Created by:
mattf on August 30, 2010
Subjects:
Classes:
Hillbrook Anglican School Science, Physics
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22 terms
Terms | Definitions |
|---|---|
 Battery | a device that converts chemical energy to electrical energy |
| Ohm's Law | the relationship which states: the resistance equals the voltage drop divided by the current |
| Resistance | an electrical device that resists the flow of electrical current |
| Voltage | The potential difference between two points; measured in volts A measure of the electric potential energy per charge. |
| Current | A flow of electricity through a conductor A measure of the charge past a point in a given time. |
| Resistivity | Intrinsic property of a conductor denoted by ρ used to measure its resistance in the equation R = ρ L/A. L = length of the conductor, A = cross-sectional area. |
| Conductivity | the ability of a material to allow either heat or electricity to flow through it |
| Series | connection of components in such a manner that current flows first through one and then through the other |
| Parallel | circuit in which components are on their own pathways |
| Thermal Conductivity | the ability of an object to transfer heat |
| Thermal expansion | the expansion of matter when it is heated |
| Celcius | K - 273 |
| Pressure | the force applied to a unit area of surface, measured in pascals |
| Volume | The amount of 3-dimensional space occupied by an object |
| Ideal Gas Law | law that states the mathematical relationship of pressure (P), volume (V), temperature (T), the gas constant (R), and the number of moles of a gas (n); PV=nRT. |
| Charles' Law | the physical law that the volume of a fixed mass of gas held at a constant pressure varies directly with the absolute temperature V1/T1= V2/T2 |
| Boyles Law | The relationship between the pressure and volume of a gas at constant temperature; when volume increase, pressure decreases.P1V1= P2V2 |
| Power | the rate at which work is done |
| Combined Gas Law | P1V1/T1=P2V2/T2 |
| Specific heat | The amount of heat required to raise the temperature of one kilogram of a substance by one Kelvin. |
| Latent Heat | The heat energy needed per unit mass to change the state (phase) of a substance. |
| kelvin | SI unit for temperature |
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