Electricity 1
Materials that allow electricity to move through it easily
Conductor
Materials that do not allow electricity to move through them easily
Insulator
How does a light switch work?
The switch completes a circuit, allowing current to flow when the light is on, and "opens" (or breaks) the circuit when the light is off.
The flow of electrons is called
Current
What is the pathway around which electrons flow?
Circuit
Plastic, glass, and rubber are good examples of
Insulators
How is lightning formed?
Friction between air, water drops, ice and hail creates ionized particles, causing charges to accumulate at the tops and bottoms of clouds.
When the electrical difference is great enough, a bolt of electricity moves from cloud to cloud or cloud to ground.
A circuit with only one path for electrons
Serial or series
Copper, silver, and even salt water are examples of
conductors
This circuit has more than 1 path for electrons
Parallel
The potential to push electrons is called
Voltage (measured in Volts)
What is the difference between an open circuit and a closed circuit
Closed - electrons can flow and circuit is working
Open - electrons cannot flow and circuit is not working
In this type of circuit, if one lightbulb goes out, the others will not be affected
Parallel
An electrical safety device that operates to provide surge protection of an electrical circuit.
Fuse, or circuit breaker
ion
What generates electricity by heating water to turn a turbine that turns a coil inside a magnetic field?
power station
a protective item necessary for protecting the eyes
googles
Which quantity is measured in watts
power
What power source is a chemical reaction resulting in extra electrons?
A battery
materials with conductivity between that of a good conductors and insulators
semiconductor
A fire caused by a oil should never be extinguished with
water
fuel and heat are two parts of the fire triangle what is the third? HINT: why does a snuffer work?
oxygen
When the electricity reaches the filament inside the lightbulb, what is most of energy transformed into?
Heat
What is the unit for resistance?
ohms
what do we call a stationary electrical charge?