Magnet Basics
What are the two types of poles found on every magnet?
North and South
What is the path that electric current follows in a complete loop?
In this type of circuit, all components are connected in a single path.
A series circuit
An electromagnet is created by wrapping wire around this type of core material.
Iron core
Good or Evil??
Good: Add 100 points to your score
Evil: Take away 100 points from another team
This term describes the invisible region around a magnet where magnetic forces can be detected.
A Magnetic Field
True or false: The earth is protected by a magnetic field.
Describe an insulator and a conductor.
Bonus Point: Provide an example of each.
Insulator - stops the flow of heat and electricity
rubber, plastic, wood, glass, etc.
Conductor - allows the flow of heat and electricity
metal, copper, aluminum, etc.
Describe a parallel circuit.
A circuit, components are connected across multiple paths.
What must flow through the wire coil to create an electromagnet?
Electric current (or electricity)
A motor converts this type of energy into mechanical energy.
electrical energy
What happens when you bring two north poles together?
They repel (repulsion)
Which component provides the energy needed to push electrons through a circuit?
A battery or power source.
What happens to the other bulbs in a series circuit when one bulb burns out?
They all go out (or the circuit is broken)
What happens to the strength of an electromagnet when you increase the number of wire coils?
It gets stronger (or increases)/
Bonus: What else can be done to increase magnetic strength?
What type of energy conversion takes place in a generator?
mechanical to electrical.
When a magnet is broken in half, what happens to each half?
They each become their own magnet with a north and south pole.
This term describes a circuit where the path is broken and current cannot flow.
An open circuit
Provide an example of an item that may use a series circuit.
Bonus Points: include an example of an item that is in a parallel circuit.
Series: old Christmas lights
Parallel: household lighting
Unlike permanent magnets, electromagnets can be turned on and off by doing this.
Controlling the electric current (or turning the current on/off)?
Motors and generators rely on the interaction between electricity and what?
Magnets
These are the only three naturally magnetic elements at room temperature. (name 2)
Iron, nickel, and cobalt
This is the unit used to measure electric current, representing the flow of charge.
Amp or ampere
In a parallel circuit, what happens to the brightness of remaining bulbs when one bulb is removed?
They stay the same brightness (or nothing changes)
Increasing the amount of electric current flowing through the coils or adding more coils are two ways to increase this property of an electromagnet.
Magnetic field strength (or magnetism)?
In an electric motor, this happens when electric current flows through a coil in a magnetic field.
The coil rotates (spins/turns)