Topic 1
What does attract mean?
It means two objects pull the other towards them.
What happens when a positive charged object and a negative charged object come close? Why?
They attract because opposite charges attract
Why are electric currents used for?
To provide energy for electric items like computers, lights, radios, tv, etc.
What did Thomas Jefferson do?
He created a cheaper, longer lasting lightbulb
Everything in the world is made up of _________
particles
What does repel mean?
It means two object push away from each other
What happens when 2 positive charged OR 2 negative charged object come near each other? Why?
They repel because like charges repel each other
Do we use static electricity or current electricity more often?
Current electricity. It powers many things in our daily lives.
What do electrical engineers do?
They create electrical devices like computers, phones, and robots.
What are the two charges that exist in the world?
Positive and negative
What charge will a piece of wool have after it is rubbed against a balloon and the balloon became negatively charged?
Positive charge
Why do you have to rub the balloon after each object?
The negative charge is gone and you have to recreate by rubbing again.
What is an electric circuit?
It is a path that allows electric current to flow.
What does it mean when a computer room is "clean"?
It is free of dust, hair, lint, and static electricity.
An object with a postive charge has _________ ________ particles than ________ particles
more positive particles than negative particles
What happens when a balloon is rubbed by wool?
Negative particles from the wool stick to the balloon
Why does your hair stand up after being rubbed by a balloon
It becomes positively charged and attracted to the negatively charged balloon
Which is NOT a part of a circuit?
Path, Source, Load, Atom
Atom
How can static electricity be dangerous?
It can jump to objects and start fires or damage them.
An object with a neutral charge has ___________ _________ particles and ________ particles
The same amount of positive particles and negative particles
What do we call it when an object has a build up of negative particles?
Static Electricity
Why does food wrap cling better to some materials than others?
Food wrap is statically charged
How is current electricity different from static electricity?
Static Electricity stays in one place until it can release the charge. Current electricity flows in a circle like through a wire.
How did Ben Franklin prove that lightning was static electricity?
He flew a kite in a storm
What charge does a balloon have after it is rubbed with wool?
Negative charge