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Thermocouple
transforms thermal energy into electrical energy through two different, intertwined metals
Energy
the ability to do work
Mechanical energy
energy possessed by an object because of its motion or its "potential to move"
Chemical Energy
energy found in chemicals, such as your food
Thermal Energy
fire or any type of heat
Electrical Energy
batteries, power stations, generators
Direct Current
when electricity flows in only one direction
Alternating Current
when electricity flows back and forth 60 times per second
Commutator
A split ring in a motor that breaks the flow of electricity for a moment and then reverses the connection of the coil
Brushes
A mechanism that makes electrical contact with the moving commutator in a motor
Armature
A rotating shaft and coil in a motor or generator
Transformers
A device that changes electricity at one voltage into electricity at a different voltage
Electromagnetic Induction
Generation of electric current in a conductor by a changing magnetic field
Power
the rate at which a device converts energy
Law of Conservation of Energy
fundamental principle that states that energy cannot be created or destroyed
Efficiency
ratio of the useful energy that comes out of a device to the total energy that went in
Kilowatt Hour
equal to a power consumption of 1000 W for one hour
Increasing Efficiency
you have to decrease friction (using bearings and lubricants)
Sources of energy that we may use
Fossil fuels, nuclear reactors, Hydro electric dams, Solar energy, Wind Energy, Hydrogen Fuel
Non-renewable
resources that, if we use them all up, they are gone (Fossil fuels)
Renewable
resources that are constantly being replenished (Sunlight, Wind)
Sustainability
the management of resources to they are there for future generations
Energy Conservation
trying to save the existing energy we have
Binary code
the language of computers (000110001111110)
Note 
Flashcard (39)