CHAPTER 1 ELECTRICITY

The amount of charge flowing past a point in a given time CURRENT

The closed path for electrons to flow CIRCUIT

The unit used to measure current AMPS

A ________ _________ protects your home from circuit overloads Circuit breaker

List 3 ways to produce static electricity FRICTION CONDUCTION INDUCTION

Like charges will _______ each other and opposites will _____________ REPEL ATTRACT

The electricity from the outlets is ______________ current and has a voltage of _____ ALTERNATING 120 VOLTS

The largest example of electric discharge LIGHTNING!

_________ allow electrons to flow freely through them. CONDUCTORS

Heating elements contain metals of ____________ resistance HIGH!!

_________ can hold a static charge but do not allow the flow of electrons. INSULATORS

Copper is used in electrical wiring because It is a conductor with LOW resistance.

In this circuit, ________ energy is converted to electrical energy. CHEMICAL

Increasing resistance will ___________ the current. DECREASE

List 4 ways to reduce resistance in a conductor. Shorten the wire Use a good conductor Make the wire thicker Reduce the temperature of the wire

If voltage increases, what happenS to the current? IT INCREASES!!

In the case of Lightning, _________ energy is converted to heat, light and sound ELECTRICAL

Electric power is measured in WATTS OR KILOWATTS

Potential difference is measured in VOLTS

The source of potential difference in a circuit BATTERY

If the voltage in a circuit is 20 and the resistance is 5, what is the current in amps? 4 amps

Why in a parallel circuit do the bulbs stay lit even if one goes out? Each has its own path for electrons to flow

Describe the flow of energy through a circuit. Chemical reactions in electrolyte push electrons out of the battery, through the conductor, to the load and back to the battery.

How does the VanDegraaf generator work??

Why can you make a balloon stick to a wall?