Conductor Insulator
what is a conductor
a material that allows electricity to flow through it
What is a circuit?
A circuit is where electricity can flow through a series of conductors
Name one material that conducts electricity
metal, gold, copper, etc.
How do you make a test fair?
only test one thing at a time
what is an insulator
a material that does not allow electricity to flow through it
Can electricity cross gaps in circuits?
no
What does an ammeter do?
It measures the current in a circuit or flow of electricity
Who are two famous inventors that we talked about earlier this unit?
Thomas Edison and Nikola Tesla
are humans insulators or conductors?
conductors
Why do engineers and others use circuit diagrams?
Because they are clear and easy to follow
If a circuit has three bulbs, wires, two batteries, a motor, and an open switch, will the bulbs light?
no because it has an open swiych
What type of electricity is lighting?
Static
What type of metal is the best for overhead cables?
Aluminium
In a circuit, why might a light bulb explode?
because you added too many batteries or there was too much electricity
Which of these would you use mains electricity for?
a. a television remote
b. a microwave
c. headphones
b. a microwave
What are three types of lighting?
Fork, Sheet, cloud to cloud, cloud to ground, ball
Put these conductors in order from greatest level of conductivity to lowest level: Aluminium, Graphite, Copper
1. Copper 2. Aluminium 3. Graphite
In a circuit, what does the brightness of the bulb mean?
it shows the amount of current flowing through the circuit
What is mains electricity?
electricity that flows from a power station. We use this in cities and homes.
How is lightning created?
The tiny bits of ice bash into each other
and rub together and, just like when you
rub a balloon on your hair, this causes
static electricity.
Eventually, the static electricity builds
up so much that it has to let out the
energy from the bottom of the cloud
and this is where we see the bright
light that is the lightning.