Show:
Magnetism
Electricity
Circuits
Motion/Energy
Voltage
100
What is a magnet?
any material that attracts iron and materials that contain iron
100
True or False? Charges that are the same repel each other. Charges that are different attract each other.
true
100
In a series circuit, how many paths are there?
One
100
Define energy.
the ability to move an object over a distance
100
Truth or dare? Voltage causes a current in electric ciruit.
What is true
200
What are the three properties of a magnet?
attracts,repels,and has one pole that points north
200
What are the two types of electric charge?
Positive and Negative Charge
200
In a parallel circuit, how many paths are there?
2 or more
200
What turns the pointer of a galvometer?
electric current
200
How does voltage cause electrons to flow in a circuit?
voltage acts as a force
300
What is a magnetic field?
the area of magnetic force around a magnet
300
What is static electricity?
the buildup of charges on and object
300
What is an ammeter?
a device used to measure currents
300
What is a galvanometer?
a device that measures small currents
300
What is resistance?
measure of how difficult it is for charges to flow through a material
400
True or False? Magnetic field lines are visible.
False
400
What are two examples of voltage?
Batteries and Generators
400
List three basic features of an electric circuit.
1.) one or more devices run by electrical energy 2.) a source of electrical energy 3.) conducting wires
400
What type of energy transformation occurs in a motor?
electrical energy is transformed to mechanical energy
400
What is the symbol for resistance?
ohm
500
What are the strongest parts of a magnet?
its pole
500
What are three ways an object can be charged?
conduction induction friction
500
What formula can you use to calculate power?
power=voltage(current) P=VI
500
Define electromagnetic induction.
generating an electric current from the motion of a conductor through a magnetic field.
500
What happens when an electric current is produced?
a continuous flow of charges travels through a material