Electricity
The force between charged particles or objects is called
electric force
True or false: a circuit must be a loop. Explain.
True
What is the attraction or repulsion between magnets called?
magnetism
The area of force that surrounds a magnet is called
magnetic field
The relationship between electricity and magnetism is called
electromagnetism
The region around a charged particle where electric force is exerted is called
electric field
The continuous flow of electric charge is known as
electric current
What is the push or pull that occurs when a magnet interacts with another object?
magnetic force
True or false: you can see the magnetic field around a magnet
false
Who discovered electromagnetism?
Hans Christian Orsted
Atoms are made up of ________, __________, and _______________
protons, neutrons, and electrons
What is electric current measured in?
amperes
True or false: magnetism cannot be permanent
false
How to the field lines look in a single magnetic field?
They start at one pole, curve around the magnet, and end at the other pole
How are electricity and magnetism related?
A magnetic field is produced by electric current running through a wire
If an object loses electrons, it will become ___________________ charged. If an object gains electrons, it will become _________ negatively charged.
positively, negatively
___________ allow electricity to flow better through them, while ____________ stop electricity from flowing.
Conductors, insulators
What kinds of materials do magnets attract?
iron or anything that contains iron
How do the field lines look in a combined magnetic field?
They combine together to form a stronger magnetic field between the two magnets.
What happens to a magnetic field around a straight wire?
It creates a magnetic field in the direction that the current is flowing.
How do electric field lines look around a positively charged object?
They point away from it.
What 3 things MUST a circuit have to produce electricity?
A power source, wires, and a device to power
Explain how the north and south poles of magnets interact with each other.
When two of the same poles are put close to each other, they will repel. When two different poles are put close to each other, they will attract.
Explain why a compass' arrow moves and how that helps you find your direction
It is attracted to the Earth's magnetic field, so the arrow moves to show which direction a person is traveling.
What happens to a magnetic field around a looped wire?
The magnetic field inside the loop is much stronger than outside the loop