Atoms
All matter on Earth is made up of what?
Atoms
What is a closed circuit?
allow the movement of electrical energy. Everything in the circuit is connected, and the electrons can move in a continuous path, so a light bulb will light.
What is resistance in a circuit?
It occurs when a material opposes, or pushes against, the flow of electrons. The more resistance a material has, the harder it is for electrons to flow through it.
Static Electricity comes from the buildup of what type of charge?
negative(electrons)
All magnets have a _____ and _____ pole.
North and South
neutral
What is an open circuit?
prevent the movement of electrical energy. There is a break somewhere in the circuit, so a light bulb will not light.
Electricity does not move through objects called...
insulators
Static electricity found in nature is called..
Lightning
What does attract mean?
To pull together
Protons have what type of charge?
Positive
What type of circuit is present in your home?
Parallel
Electricity moves through objects called..
Conductors
The energy of heat.
What is a magnetic field?
the invisible space around a magnet in which a magnetic force can be found
Electrons have what type of charge?
Negative
Explain a series circuit.
here is only one pathway in which the current can travel. If one bulb goes out, the others will, too.
Does increasing the number of light bulbs in a parallel circuit increase the resistance, decrease resistance, or leave the resistance the same?
It stays the same.
What is mechanical energy?
The energy of motion
Most magnets are made out of..
metal-iron, cobalt, and nickel
What are the three components of an Atom?
Protons, Neutrons, and Electrons
Explain a parallel circuit.
there are two or more pathways in which the current can travel. A parallel circuit uses parallel wires for the electrons to flow through; if one part of the circuit is incomplete, electricity can still flow in the other parts.
Does increasing the number of light bulbs in a series circuit increase, decrease, or leave the resistance the same?
It increases the resistance.
What is radiant energy?
The energy of light
What is an electromagnet?
a piece of iron that becomes a temporary magnet when electricity flows through an insulted wire coiled around it