Circuits
An unbroken path which negative charges can flow is called _____
A) series
B) circuit
C) conductor
B)Circuit
An object that attracts certain metals is called _____.
A) a circuit
B) an insulator
C) a magnet
C) a magnet
two things that use electromagnets are microwave ovens and ______.
A) maglev trains
B) screwdrivers
C) paper currency
A) maglev trains
A) magnetism
B) electricity
C) a circuit
B) electricity
Particles of matter can have a positive or a _____ charge.
A) positive
B) current
C) negative
C) negative
A material that does not allow electricity to flow through it easily is called _____
A) an insulator
B) a circuit
C) a conductor
A) an insulator
A magnet field is caused when _____ flows through a circuit.
A) a current
B) air
C) protons
A) a current
A temporary magnet formed when electric current flows through a wire coiled around certain metal cores is called an _______.
A) generator
B) electromagnet
C) magnetsim
B) electromagnet
Objects with opposite charges _____ each other.
A) attract
B) combine with
C) repel
A) attract
Open ended.
List two ways magnets can be used to produce electricity.
1. By moving a magnet through a coil of wire
2. By moving a coil of wire through a magnetic field
A material that allows electricity to flow through it easily is called _______
A) an insulator
B) a circuit
C) a conductor
C) a conductor
The ends of a magnet are called the _____.
A) magnetsim
B) negative and positive ends
C) poles
C) poles
Electricity can be produced by a ______, which uses a coil of wire and a magnet.
A) magnet
B) magnetic field
C) generator
C) generator
When electrical charges build up on the surface of an object, ______ occurs.
A) a series circuit
B) an insulator
C) static electricity
C) static electricity
Open ended.
What is all matter made up of?
Small particles with an electric charge.
True or False
A parallel circuit has more than one path.
True.
The area around a magnet where the force of the magnet can act is called the ______.
A) magnetic field
B) poles
C) magnetism
A) magnetic field
True or False
Magnetism and electricity are related.
True.
Objects with the same kind of charge _____ each other.
A) attract
B) combine with
C) repel
C) repel
Open ended.
Miss Culbert, an electrician, is looking at the plans for a TV room. All the outlets will be part of the sam circuit. Would it be better to have the outlets and the lights wired in a parallel circuit or a series circuit? Explain your answer.
Ex.
A parallel circuit would be better because it would allow the outlets and lights to be turned on and off individually. In a series circuit turning off one light would break the circuit, turning off all outlets.
True or False
Every circuit must have an unbroken path and a power source.
True.
The pushing of pulling force caused by a magnet is called ______.
A) magnetism
B) force
C) neutral
A) magnetism
True or False
A magnet's magnetism is weakest at the magnet's poles.
False. Strongest.
True or False
The continuous flow of negative charges through a material is called static electricity.
False. Electricity.
If a dog has 10 positive charges and 5 negative charges, how is the dog charged?
A) positively
B) negatively
C) neutrally
A) positively