Show:
Static and Current Electricity
Circuits and Measuring Electricity
Batteries
Magnetism
Electronics
100
What are the 3 electrical charges?
positive, negative and neutral
100
How many paths in a parallel circuit?
2 or more
100
What metals are usually used in a battery?
copper and zinc
100
What 3 things attract to a magnet?
iron, nickel, cobalt
100
What is an electrical current that carries information?
electrical signal
200
What is the buildup of electrical charges on the surface of an object?
static electricity
200
What is the measurement of electrical force?
volt or voltage
200
What is a liquid or paste that conducts electricity?
electrolyte
200
What is magnetic force?
magnetism
200
What is the name of the code that is used to communicate information?
binary number system
300
What material slows down the flow of electrons?
resistor
300
What is the measurement of electrical current that flows past a point in one second?
amp or ampere
300
What 3 things are needed for an electric cell?
2 metals and an electrolyte
300
Name 2 ways to make an electromagnet stronger.
more coils, larger core, bigger power source
300
What is an integrated circuit made of?
silicon
400
How does a switch affect a circuit?
It makes an open circuit that does not allow electrons to flow.
400
Which measures how fast work is done?
watt or wattage
400
What are 2 advantages to a wet-cell battery?
great power in a short time and rechargeable.
400
Who made the electromagnet?
William Sturgeon
400
Name 3 benefits of an integrated circuit.
durable, small, inexpensive to make, fast
500
What is used to make houses safe from short circuits?
fuses and circuit breakers
500
How is a light bulb in a series circuit the same as a switch?
When the bulb breaks, it opens the circuit like a switch.
500
Why is a dry-cell battery safer?
The electrolyte is a paste and is sealed more.
500
How does a generator work?
Water, wind or steam turns a turbine. The turbine turns a shaft and the shaft turns a magnet inside a coil of wire. This spinning makes electricity.
500
What does a computer really understand?
open and closed circuits