10980247
Description
Flashcards by Laurette Zajpt, updated more than 1 year ago
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Created by Laurette Zajpt
over 6 years ago
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| Question | Answer |
| energy | the ability to do work |
| chemical energy | energy stored in the bonds of chemical compounds (food) |
| electrical energy | energy made available by the flow of electric charge through a conductor |
| solar energy | energy from the sun |
| wind energy | energy produced by wind |
| mechanical energy | energy capable to do work/energy of movement |
| elastic energy | potential energy that is stored when a body is deformed |
| energy transformation | when energy changes from one form to another |
| energy transfers | the movement of energy from one form to another |
| sound energy | energy that creates noise through vibrations |
| potential energy | stored energy |
| kinetic energy | energy of movement |
| nuclear energy | the energy produced by the bonding of atoms |
| gravitational potential energy | the energy due to the position of a body or object in a gravitational field. |
| velocity | speed and direction |
| thermal energy | heat energy |
| mass | the amount of matter in an object |
| law of conservation of energy | energy cannot be created or destroyed |
| friction | when two things rub together |
| wasted energy | energy that is not used; wasted on friction |
| voltage | the amount of electricity in a power source |
| volts | the difference in electric potential between two points of a conducting wire when an electric current of one ampere dissipates one watt of power between those points; voltage is measured in volts |
| amps | type of measurement; used to measure current |
| energy chain | one energy change follows another |
| weight | the force exerted on a body by gravity |
| useful energy | energy used |
| input energy | the total amount of energy you start with |
| Sankey diagram | summaries all the energy transfers taking place in a process |
| current | flow of electricity in a circuit |
| proton | a particle with a positive electric charge |
| electron | particle with negative charge |
| circuit | a path between two or more points along which an electrical current can be carried. |
| van de graaff generator | an electrostatic generator which uses a moving belt to accumulate electric charge on a hollow metal globe on the top of an insulated column, creating very high electric potentials |
| load | what uses the electricity in a circuit |
| GPE (calculation) | mgh (GPE = Gravitational Potential Energy, m=mass, g=9.81 m/s2, h=height) |
| KE (calculation) | ½ mv2 (KE= Kinetic Energy, m=mass, v=velocity) |
| V (calculation) | d/t (v=velocity, d = distance, t = time) |
| efficiency | useful energy/input energy x 100 |
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