Transcript Static electricity

Circuit and Magnet Project
by Gautham Mudireddy
Ms. Dowling
5th Grade
Static electricity
Static electricity occurs when an object that
has negatively charged particles meets an
object with positively charged particles .
There are also objects that are electrically
neutral , meaning that they have the same
number of positive and negative charges .
Rubbing is a way to create static
electricity. For example, if you walk across
your carpet rug and answer the door , the
doorknob will give you a shock . This
happens because you pick up negatively
charged particles when you first had an
overall positive charge, and now you have
an overall negative charge from rubbing
your feet on the carpet rug. The doorknob
has an overall positive charge, so that’s
how you get a shock .
Insulators/conductors
 An insulator is an object that
doesn’t let materials flow
through easily.
 4 examples of insulators are
plastic, rubber, glass, and dry
wood.
 A conductor is an object that
lets materials pass through
easily.
 4 examples of conductors are
water, gold, silver, and copper.
 Insulator/ conductor
Circuits

The pathway that electric current follows is called an electric circuit. The circuit can be closed, or complete,
which is a path that does not have any gaps or openings. A circuit with a gap is called an open or incomplete
circuit. Most circuit have a device called a switch. A switch closes and opens a circuit. Lower the switch, and
the circuit closes and the light bulb will light. Lift the switch up and the circuit opens, and the light bulb
turns off.

Every working circuit has at least 3 parts: a power source, which includes a battery, a conductor, {usually a
wire}, and an object that uses electric current, such as a light bulb. If you open a circuit, it will not work
because electric current can not flow. If you close a circuit, it will work because electric current can flow.

When a circuit has three parts, current flows in only one pathway. However, a circuit can have more parts
which include a switch, more than one battery, and more than one object using current. There are two ways to
arrange the pathway of a circuit, which are described below:

In a series circuit, the parts are connected so that electric current passes through each part, one after another ,
along a single pathway. If you remove one part from the circuit, you create a gap and current no longer
moves through any of the parts.

In a parallel circuit, the parts are connected so that current passes along more than one pathway. If you
remove one part from the circuit, current still moves through the other parts.
Bar magnets and electromagnets
 3 similarities in bar magnets and
electromagnets include:
electromagnets and bar magnets are
both magnets; both have a magnetic
field; both produce magnetism.

3 differences in bar magnets and
electromagnets include :bar magnet
has poles, but an electromagnet
doesn’t; a bar magnet is permanent,
and a electromagnet is temporary; and
a bar magnet is made of magnetite,
and an electromagnet is made up of
wire, battery, and iron .