Electricity

1
Electricity and Magnetism
2
Negative charges in an atom are called
___________.
electrons
3
What kind of electricity can be caused by rubbing
two materials together?
Static Electricity
4
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
5
What is a discharge of static electricity in the
atmosphere called?
Lightning
6
Lightning occurs when the ___________ charges in
the thundercloud build up and jump to the
____________ charged ground.
negative
positively
7
What kind of electricity is caused by a
continuous flow of electrons?
Current Electricity
8
What is the path that electricity flows through
called?
Circuit
9
What can be used to control the flow of
electricity?
Switch
10
What do we call materials that allow the flow of
electricity?
Conductors
11
What do we call materials that do not allow the
flow of electricity?
Insulators
12
What is a poor conductor called?
Resistor
13
Resistors allow electrical energy to be
___________ into other forms of energy.
changed
14
Name three types of energy that electricity can
be changed into.
Heat, light, and mechanical energy
15
How many pathways does a series circuit have?
One
16
How many pathways does a parallel circuit have?
Two or more
17
What kind of circuit is it?
parallel
18
Electric current creates a _____________ field.
magnetic
19
What do you make if you put together a closed
circuit and wrap the wire around an iron bolt?
Electromagnet
20
How can you make an electromagnet stronger?
You can wrap the wire around the iron bolt more
times.