Electricity
Charging that occurs when electrons are transferred from one object to another by DIRECT contact
Conduction
Any material that attracts iron or materials containing iron and has two poles that exert forces
Magnets
The interaction between electricity and magnetism
Electromagnetism
The loss of static electricity as charges move OFF an object
Electric Discharge
The combination of forces
Net Forces
Charging that occurs when charges in an uncharged object are rearranged WITHOUT direct contact with a charged object
Induction
The part of the magnet where the magnetic effects are strongest
The Poles
A coil of wire that produces a magnetic field when carrying an electric current
Solenoid
When something is NOT moving
Static
An example of electric discharge during a thunderstorm
Lightning
Rubbing two objects together, causing electrons to be “wiped” from one object and transferred to another
Friction
The FORCE of repulsion or attraction between the poles of magnets
Magnetic Force
As more loops are added to a solenoid, the strength of the magnetic field _________.
Increases
A material in which charges can move easily
Conductor
All objects that have mass also have _________ attraction
Gravitational
The LAW that states that like charges repel and opposite charges attract
Law of Electric Charges
Tiny regions of atoms that are grouped together
(hint: in magnets, they are aligned)
Domains
How can the polarity of an electromagnet be reversed?
Reverse the direction of the current / “flip” the battery
A material in which charges cannot easily move
Insulator
Forces that do NOT require objects to be touching
(such as gravity)
Non-Contact Forces
The REGION around a charged particle that can exert a force on another charged particle
Electric Field
A type of magnet that is easy to make, but loses magnetization easily
Temporary Magnets
What is ONE benefit of electromagnets?
Possible Answers:
Control Strength
Change Polarity
Turn On/Off
The largest magnet on Earth
Earth!
A sketch that shows all the forces acting on an object
Free Body Diagram