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, insulated copper wire, and iron nail
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 of the magnet.
True or False: An electromagnet is a permanent magnet
False
what is a conductor?
A material that allows heat flow easily
What is friction?
Transfer of electrons through rubbing objects.
What is static electricity?
A charge imbalance that results in the buildup of excess electric charge on an object.
What is a magnet??
A material that gives off a magnetic field
what are 2 of the ferromagnetic materials?
Iron, Steel,Cobalt, and nickel
What is a circuit?
A path that allows electricity told flow.
How is charge transferred?
The direct contact between two items
What is a electric motor?
Device that uses an electromagnet to convert electrical energy into mechanical energy.
Does the attractive force of magnets decrease or increase as the magnet gets further away?
decrease.
a solenoid (coil) wrapped in iron core
What are 2 types of circuits?
parallel and series
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 can't be created or destroyed only transferred.
True or False: Magnetic poles can't be isolated
True :)
How can an electromagnet be made stronger? (name one way)
Wrap the coil tighter, use a larger iron core, increase current/voltage
what is a disadvantage of connecting bulbs in a series
The bulbs will be dimmer
What is the difference between nonmagnetic materials and magnetic elements?
In magnetic elements each atom is aligned to make a magnetic field and in a 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.