Magnets
What would happen if two North poles were close to each other?
They would repel.
What are the three main parts needed to make an electromagnet?
Battery (power source), insulated copper wire, and iron nail (iron rod).
What is a switched used for?
To turn off and on electricity.
Can magnetic poles be isolated?
No.
What is matter?
Anything that has mass and takes up space.
Is the force strongest at the middle or ends of the magnet.
The ends.
True or False: An electromagnet is a permanent magnet.
False
What is a conductor?
A material that allows electricity to flow easily.
What is friction?
Transfer of electrons through rubbing objects.
What is static electricity?
A charge imbalance that results in a buildup of excess electric charge.
What is a magnet?
A material that gives off a magnetic field.
What are two of the ferromagnetic materials?
Iron, steel, cobalt, and nickel.
What is a circuit.
A path that allows electricity to flow.
How is charge transferred?
The direct contact between objects.
What is an electric motor?
Something that uses an electromagnet to convert electrical energy into mechanical energy.
Does the attractive force of magnets decrease or increase as the magnets get farther away?
Decrease.
What is an electromagnet?
A coil (solenoid) wrapped around an iron core.
What are the two types of circuits?
Parallel and series circuits.
What is ferromagnetism and how does it work?
Objects placed in a strong magnetic field become magnetized due to the poles within their atoms aligning.
What is the law of conservation of charge?
Charge cannot be created or destroyed only transferred.
True or False: Magnetic poles can not be isolated.
True.
How can you can make an electromagnet stronger?
Making the coils tighter.
What is the disadvantage of adding more than one lightbulb in a circuit?
The light bulbs will be dimmer.
What is the difference between nonmagnetic elements and magnetic elements?
In magnetic elements each atom is aligned to make a magnetic field and in nonmagnetic elements each atom is not always aligned resulting in no magnetic field.
What is an electroscope?
Tool that is used to detect the magnitude of an electric charge.