Show:
Electricity & Electric Currents
Electric Circuits & Volts; Fuses & Circuit Breakers
Dry Cells & Batteries;
Magnetism
Electromagnets;
Electric Motors & Generators
Electronics & Using Electricity Safely
100
This is caused by matter that has an electric charge
What is electricity?
100
The path taken by an electric current is called an electric _________
What is circuit?
100
dry cells and batteries store this
What is electricity?
100
if an iron bar is placed inside a coil of wire when electricity flows through it, this is formed
What is an electromagnet?
100
this is the branch of science that makes things such as radios, stereos, televisions, calculators, and computers
What is electronics?
200
Things that have the opposite charges do this
What is attract each other?
200
When there are no breaks in the path, the circuit is this
What is closed?
200
a dry cell has two posts, north and south, called these
What are terminals?
200
If an electric wire is bent into this, and electricity flows through it, this becomes a kind of magnet
What is a coil?
200
these are tiny devices used to change current electricity into signals
What are transistors?
300
Electrically charged matter whose particles all move in the same direction is called this
What is current electricity?
300
When a switch is off, the circuit is this
What is open?
300
This is the pulling force that certain metals have
What is magnetism?
300
This type of energy is needed to make anything move
What is mechanical energy?
300
these are very small and are used in most electronic devices
What are microchips?
400
This current happens when the electrons flow in the same direction all the time
What is direct current?
400
these have wires inside that melt easily when the circuit has too much current; they are like little light bulbs
What are fuses?
400
these metals attract and repel other pieces of metal
What are magnets?
400
this is a machine that changes electric energy into mechanical energy
What is an electric motor?
400
this is a good conductor of electricity
What is water?
500
This current happens when the electron flow changes directions
What is alternating current?
500
this has a switch that works like a fuse; if the electric current is too great, a switch opens and stops the current
What are circuit breakers?
500
this is an attracting area around every magnet
What is magnetic field?
500
the electromagnet in an electric motor keeps changing ________________
What is direction?
500
when cleaning or fixing an appliance, be sure to do this first
What is pull the plug out of the outlet?