Electric charges
An object that has more electrons than protons is _______________.
negatively charged
The two types of electric circuits are ______________ and _____________.
Series and parallel
Which material has atoms arranged in domains that point in random directions?
magnetic materials
What is the electric charge of a proton?
positive
Will a positively charged object and another positively charged object attract each other, or repel each other?
Repel
The invisible region around a charged object is an ______________________.
electric field
If there is only one path for an electric current to flow, is it a series or parallel circuit?
series
As the poles of two magnets move closer together, the force between the magnets
becomes stronger.
A machine that transforms mechanical energy to electrical energy is a _____________.
generator
Will a negatively charged object and a positively charged object attract or repel?
Attract
The loss of an unbalanced charge is an ______________.
electric discharge
If each device in a circuit connects to the electric source through separate paths, is it a series or parallel circuit?
parallel
A device that can transform electric energy in a circuit could be a _______________.
lightbulb
What type of current flows in one direction?
Direct current
The property of a material to be electrically charged and a magnet at the same time is called ________________.
Electromagnetism
The amount of energy used to move each coulomb of charge through a circuit is the circuit's _________________.
voltage
The source of electric energy in most simple circuits is a _____________.
battery
Electric circuit consist of a conductor, such as a ____________.
wire
What kind of current can change directions?
Alternating current
Identify the components of an electromagnet.
A coil, a conductor, a magnet, and an electric field.
The measure of how difficult it is for an electric current to flow in a material is the circuit's ___________________.
electric resistance
(Long answer) Explain how a rubber balloon becomes electrically charged when it is touches with a piece of wool.
Electrons move from one material to the other. The object that gained electrons is negatively charged, and the object that lost electrons is positively charged.
(Long answer) Describe how a balloon that has a positive electric charge would interact with a balloon that has a negative electric charge.
Positive and negative charges attract, so the objects would "stick" together.
(Long answer) Define "electric current." Use the term "charged particles" in your definition.
An electric current is a path in which electrons, negatively charged particles, flow.
(Open Response) Offer one reason why parallel circuits are used instead of series circuits to connect the devices in a home.
In a series circuit, if you break the connection in any part of the circuit, everything connected to the circuit will power off. If you want a device off in one room, and a device on in another room, you would want a parallel circuit.