Elctricity Flashcards
What is a short circuit
Electricity will always take the easiest path so, if you put a knife in the toaster while it is still running, electricity will go through the knife. It will take a shortcut.
What is current electricity
Electricity that flows or moves through wires
What is a complete circuit
It is when electricity flows from the battery through the wires into the lightbulb lighting it up, making an output
What is an incomplete circuit
The spot for electricity to flow had been broken. The electricity will stop and the bulb will not light.
What is a closed circuit
It is a complete circuit except switch has been added.
What is an open circuit
The switch is open and the circuit is incomplete. The electricity will stop and the bulb will not light
What is a series circuit
If there are two or more lights hooked together, one after the other like a train, they are in a series. The main problem in a series circuit is that if one of the bulbs burns out the circuit will be incomplete and the whole circuit will not work
What a parallel circuit
Parallel circuits have all the bulbs connected directly to the power source all the bulbs will turn on at the same time. Also, if one of the bulbs goes out, the others will stay lit.
Name 2 safety devices used at home
A breaker, and a fuse
What is electricity
A type of energy that uses electrons to flow
Name 2 types of electricity
Static, Current
How can you tell if static electricity is working
Here a crackle, see a spark, items will stick together
How does electricity work through a light bulb
First, electrons flow in the metal at the bottom of the bulb. Then, electrons flow through the filament which glows. Electrical energy is changed into light energy. Next, electricity flows out through the metal bump at the bottom of the bulb.
Name every type of circuit
Short complete, incomplete, closed, open, series, parallel, lemon, Penny
What is a circuit
An I’m broken pathway that electricity follows. It needs wires, a power source and an output
How could you show static electricity
Dragging shoes on the carpet, items sticking together, computer/TV screen fuzzing
What are three common example of insulators
Rubber (used to make gloves for electrical workers), Glass (used to make insulators on the tops of electrical poles), plastic (used to insulate wires in most appliances)
What is the difference between insulators and conductors
The atoms in an insulator hold their electrons very tightly and do not permit electricity to flow. The atoms in conductors let their electrons move freely and allow electricity to flow.
What are three common examples of good conductors
Copper (used in most wiring), silver (used in special wiring), water with salt in it
How does static electricity work
The friction made when two different objects are rubbed together creates static Electricity
What is one example of static electricity in the working
First, rubbing causes the balloon to steal electrons from your hair. The balloon has a buildup of electrons and have a negative charge your hair lost electrons and so it has a positive charge. Since opposites attract, the negatively charged balloon will stick to the wall. Lastly, if there are enough electrons on the balloon they will try and jump to the wall. They might also make a small spark.
How is electricity made.
electricity is made any time small particles called electrons move from one place to another
How many electrons can fit in the tip of a ballpoint pen.
1 billion
What is a breaker
A breaker is a device that prevents circuits in houses and buildings from being overloaded
What is a fuse
The fuse is a safety device that prevents appliances from being ruined when circuits are overloaded.
