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WorksheetsChapter 8: Electricity and Magnetism
Total questions: 55
Worksheet time: 34mins
Some benifits of integrated circuits are except________?
small
inexpensive
popular
durable
Which circuit signal information by opening closing electrical circuit in sequence
(a)
How many things does a computer actually know?
None
2
Over 100
5
The binary number system is a code used by electronic devices to (a) information
What kind of paste is in a battery?
There is no paste in a battery
Electronics
Electrolytes
Toothpaste
Unlike a conductor, _____ does not allow electricity to flow through it.
Resistor
Insulator
Generator
Magnet
_____ is the measurement of the amount of the electrical push or force in a circuit.
Volt
Watt
Electrolyte
Miles per hour
What is the difference between an electronic device and a electrical device?
Electrical devices are solar powered
Weight
Size
An electronic device communicates information
Contains one or more electric cells.
Electrolytes
Battery
Circuits
Electrons
Magnetic field is stongest at the (a) of the magnet.
A series circuit contains multiple courses of electricity
True
False
A conductor is a material that allows electrons to back up and thus produce heat
True
False
What causes a dead battery?
(a) measures the amount of electrical push or force in a circuit
What are three benefits of integrated circuits?
Small, inexpensive, and durable
What is a material that can work as a conductor and an insulator?
(a)
A (a) is an electrical current that carries information?
Discovered that moving a magnet around or through a loop of wire produces electricity in the wire.
Joseph Henry
William sturgeon
Hans Christian Oersted Michael Faraday
Joseph Henry
Michael Faraday
Hans Christian Oersted
Joseph Henry
Series circuits has more than one path for the flow of electricity.
TRUE
FALSE
(a) elecritricity is produces when charges build up on the surface of an object.
What is another name for an integrated circuit?
(a)
A semiconductor is a material that can work as a conductor or as a insulator.
FALSE
TRUE
ROM stores facts temporarily
True
False
___________ is the brain of the computer that tels the other parts of the computer what to do.
WAVES
CURRENT
Central processing unit
Electricity
What is a material that reduces the flow of electricity?
(a)
_____ are the units of measurement of the amount of current flowing through a circuit in one second
Amperes
Electrical cell
Volt
Watt
William Sturgeon discovered that adding a metal coil to a coil of wire increases the magnetism.
True
False
ROM contains the built in memory and programs, or long term memory
True
False
A generater uses magnet to convert motion into electrical energy.
TRUE
FALSE
A CPU is a central processer (a)
The ____ ____ ______ uses open and closed circuits to communicate the number 0 and the number 1
(a)
Magnets and static electricity can attract and repel objects
TRUE
FALSE
Who discovered that current traveling through a wire produces a weak magnetic field in the live wire?
Hans Christian Oersted
William Sturgeon
Joseph Henry
Michael Faraday
Static electricity occurs when a circuit and a power source allow neutrons to move.
TRUE
FALSE
Which of these are electronic devices
TV
I phone
Tablet
All of the above
Electrical devices can communicate information but electronic devices cannot.
OFTEN
FALSE
TRUE
Which of the following is the most appropriate definition for magnetism?
the force of attraction or repulsion of magnetic materials
the force of attraction only of magnetic materials
the force of repulsion only of magnetic materials
none of the above
Which of the following is the most appropriate definition for magnetic field?
an area surrounding a magnet that does not apply a force (a push or pull)
an area directly on the magnet that applies a force (a push or pull) without actually touching an object
an area of magnetism surrounding a magnet that applies a force (a push or pull) without actually touching an object
an area surrounding a magnet that applies a force (a push or pull), but only by directly touching an object
If placed in a magnetic field, which of the following materials would be affected?
a compass
wood chips
plastic paper clips
pieces of glass
In order for the electromagnet above to lose its magnetism, which of the following must occur?
The wire of the circuit must be tightened.
The battery in the circuit must be switched for a different brand.
The electric current must stop flowing in the circuit.
No circuit is present.
What energy transformation occurs in this device?
electrical energy to mechanical energy
chemical energy to mechanical energy
mechanical energy to chemical energy
mechanical energy to electrical energy
Which of the following is the best description of a generator?
A generator produces an electric current when a coil of wire wrapped around an insulator is rotated near a battery.
A generator produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet.
A generator produces an electric current when a coil of wire wrapped around an iron core is rotated near another iron core.
None of the above
What purpose do magnets serve in an electric motor?
The magnets serve as a source of energy for the motor.
The magnets change the flow of the electric current.
The magnets cause the coil to rotate by their poles attracting and repelling.
The magnets are not a necessary part of a motor.
Which type of circuit has more than one pathway for electricity to follow?
Series
Parallel
Resistance
Electromagnetic
What machine produces electricity?
Toaster
Electromagnet
Generator
Pencil sharpener
What is the build up of a nonflowing electric charge on an object?
Circuit
Static electricity
Current electricity
Quick electricity
What do we call the difference in potential energy between two ends of a circuit?
Voltage
Charge
Circuit
Resistance
What allows a current to flow easily?
An insulator
Wood
Rubber
A conductor
This demonstrates how magnetism and electricity are related.
A conductor
An insulator
An electromagnet
Rubber
What kind of circuit is this?
Parallel
Circuit
what would happen if you removed one of the lightbulbs from this circuit?
The other light would go out
Both lights would still shine
The other light would continue to shine
What type of circuit is this?
Parallel
Series
What would happen if you removed one light bulb from the circuit?
The other light would go out
Both lights would still shine
The other light would continue to shine
the other bulb would blow up
A liquid or paste substance that conducts electricity.
(a)
A battery works as a result of a chemical reaction and the movement of electrons
false
true
