Electricity and Magnetism

Negative charges in an atom are called ___________. electrons

What kind of electricity can be caused by rubbing two materials together? Static Electricity

When you rub a balloon with a cloth, __________ charges are knocked off the cloth and are collected onto the balloon. This makes the balloon have a __________ charge. negative negative

What is a discharge of static electricity in the atmosphere called? Lightning

Lightning occurs when the ___________ charges in the thundercloud build up and jump to the ____________ charged ground. negative positively

What kind of electricity is caused by a continuous flow of electrons? Current Electricity

What is the path that electricity flows through called? Circuit

A circuit must be _________ to allow the flow of electricity. closed

What can be used to control the flow of electricity? Switch

What do we call materials that allow the flow of electricity? Conductors

What do we call materials that do not allow the flow of electricity? Insulators

What is a poor conductor called? Resistor

Resistors allow electrical energy to be ___________ into other forms of energy. changed

Name three types of energy that electricity can be changed into. Heat, light, and mechanical energy

How many pathways does a series circuit have? One

How many pathways does a parallel circuit have? Two or more

What kind of circuit is it? parallel

What kind of circuit is it? series

What is the area of magnetic force called? Field

Electric current creates a _____________ field. magnetic

What do you make if you put together a closed circuit and wrap the wire around an iron bolt? Electromagnet

How can you make an electromagnet stronger? You can wrap the wire around the iron bolt more times.