Science Key Terms
science key terms chapter 3
Terms
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- step-down transformer
- a transformer that decreases voltage
- galvanometer
- a device that measures small currents
- step-up transformer
- a transformer that increases voltage
- transformer
- a device that increases or decreases voltage
- energy
- the ability to move an object over a distance
- electric motor
- a device that uses an electric current to turn an axle
- alternating current
- a current consisting of charges that move back and forth in a circuit
- electric generator
- a device that transforms mechanical energy into electrical energy
- electrical energy
- the energy associated with electric currents
- electromagnetic induction
- generating an electric current from the motion of a conductor through a magnetic field
- mechanical energy
- the energy an object has due to its movement of position
- electromagnetism
- the relationship between electricity and magnetism
- electromagnet
- a strong magnet that can be turned on and off
- solenoid
- a coil of wire with a current
- direct current
- a current consisting of charges that flow in one direction only