Embedded Files
Chapter 5, pg 169-260
Magnet: an object that attracts iron and other materials that have magnetic qualities similar to iron.
Magnetic force: a noncontact force which means it can apply a force without being in direct contact with another object.
Magnetic pole: a place where the force a magnetic applies is the strongest.
Magnetic potential energy: stored energy due to the interactions of magnetic poles in a magnetic field.
Magnetic domain: a region in a magnetic material in which the magnetic fields of the atoms all point in the same direction.
Electric field: invisible region around any charged object.
https://www.youtube.com/watch?v=B51GcGIqLlY
Electrically charged: an imbalanced amount of positive charge and negative charge.
Electrically neutral: An object with equal amounts of positive charge and negative charge.
Induction: Method of charging an object without touching it.
Electric insulator: A material in which charges cannot be easily moved (glass, rubber, wood, etc).
Conduction: Another way that charged particles transfer between two conductors.(Need contact.)
https://www.youtube.com/watch?v=AM5EYO5wWMA
Closed circuit: When a circuit is complete and electric energy flows through the circuit.
Ex. Flashlight, phone, TV
Open circuit: When a circuit is not complete and no electric energy flows through the circuit.
EX. Extension cord, outlet
Current: the movement of electrically charged particles.
Voltage: the electrical potential energy difference between two places in a circuit.
Amperage: the volume of electrical flow in a circuit.
Electromagnet: A temporary magnet made with a current-carrying wire coil wrapped around a magnetic core.(p. 261 of your workbooks)
Electric motor: a device that uses an electric current to produce motion.
Electric generator: a device that uses a magnetic field to transfer mechanical energy to electric energy.
Direct current(DC): An electric current flows in a one direction. Found in batteries.
Alternating current(AC): an electric current that changes direction in a regular pattern. Found in your house and the school.
Electromagnetism: the interaction between electric charges and magnets.
(Use electricity to make magnets or magnets to make electricity.)
Extra notes
The path of an electric current.
A) Series circuit-
The current has only one loop to flow through. (Ex. Flashlights and Old holiday lights)
B) Parallel circuits-
Contain two or more branches for current to flow through
*Short circuit=
Current that flows over an unintended path that has very low resistance.
https://www.youtube.com/watch?v=EqF18WGn4Tg
*Live wire=
Any wire connected to the voltage source.
*Induced magnetism=
The process of magnetizing some other material with a magnet.
Permanent magnets are made of Iron, Aluminum, Nickel and Cobalt.
New magnets are made of an alloy AlNiCo
Solenoid- A single wire wrapped into a cylindrical wire coil
Tesla coil demonstration.
https://www.youtube.com/watch?v=fdIYwIWfYyo
Galvanometers- Devices that use an electromagnet to measure electric current
Transformer- A device that increases or decreases the voltage of an alternating circuit
Magnet demonstrations
https://www.youtube.com/watch?v=ViZNgU-Yt-Y
Electricity demonstrations
https://www.youtube.com/watch?v=wwOY6RgrDKQ
List the similarities between magnetism and electricity.
A)Like poles repel Like charges repel
(Likes Repel)
B)Opposites poles attract Opposites charges attract (Opposites attract)
C)Distance increases-attractive forces decrease
D)Depends on electron imbalance (Needs electron imbalance.)
E) Magnets have a north-south pole Electricity can be positive or negative. (Both have opposite poles)
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