Static Electricity
Magnetism
Transferring Electricity
Transforming Electricity
Electromagnetic
100
What do you call an excess of positive or negative charge in an object?
Static Electricity
100
What do you call a force that acts on moving electric charges and magnetic materials?
magnetism
100
What do you call a material which an electric charge can move easily through?
Conductor
100
Who invented the light bulb?
Thomas Edison
100
What is a magnet that only works with electricity?
electromagnet
200
What is a property of matter that can be described as positive or negative?
an electric Charge
200
What part of the compass reacts to Earth's magnetic poles?
the needle
200
What is an electric charge in motion?
electric current
200
What is a force that acts when two surfaces rub together?
friction
200
What do you call a machine that uses electromagnets to change electrical energy into mechanical energy?
a motor
300
What do you call the push or pull between two charged objects?
Electric Force
300
Where can you find magnetic poles on a magnet?
the ends
300
What is a material in which an electric charge moves slowly?
insulator
300
What is an object that uses the energy in a circuit?
resistor
300
What do you call a machine that uses electrical energy by turning coils of wire around powerful magnets?
a generator
400
Why do two objects with the same charge always repel each other?
Charged objects behave in predictable ways.
400
True or False. All magnetic fields have the same shape.
False
400
Which kind of circuit has two or more paths through which electric charges can flow, so the current will still flow if one loop is broken?
a parallel circuit
400
What do you call the resistor in an incandescent light bulb?
a filament
400
Who discovered electromagnetism?
Hans Christian Orsted
500
What is released when charged particles move?
electrical energy
500
If you cut a magnet in half, would each end still have a north and south pole?
Yes
500
When can an electric current not flow through a series circuit?
When there is a break.
500
Do charges exit a circuit with less energy than they had when they entered the circuit?
No. Energy is never gained or lost, only transformed.
500
True or False. Electromagnets can be turned on and off.
True
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