WHAT IS ELECTRICITY?
what is electricity?
Moving Charges
What is one way DC circuits fight high resistance?
Bigger Diameter Wire
What is a proton?
A proton is a positively charged part of an atom.
How is hydro electric power produced?
The power of water is used to turn the wheels of a turbine that is connected to a generator that transforms the kinetic energy of from the turbine in electrical energy.
When you open a circuit....
Electrons stop flowing, devices turn off
Describe how electricity is used?
Provides power on Earth and in Space
What is a conductor?
A conductor is an object that allows electricity to pass through it.
What is an electron?
An electron is a negatively charged part of an atom.
How are fossil fuels like natural gas, oil and coal used to generate electricity?
The fossils fuels are burned to heat water which boils and creates steam. The steam rises and turns turbines which generate electricity.
When you close a circuit....
Electrons can flow, devices turn on
What is the job of a battery?
DC Voltage Source (Electric Potential Energy)
How do electrons move in AC?
Back and forth through the load
If an atom has the same number of electrons and protons, what type of electrical charge does it have?
a neutral charge
Describe two problems with burning fossil fuels to generate electricity.
air pollution, acid rain, carbon dioxide from the burning process contributes to the greenhouse effect
A load in a circuit is
Ammeter
Edison's smear campaign led to the electric chair. What did he call the process of electrocution in this manner?
Westinghousing
When objects have different charges, do they attract or repel each other?
Objects with opposite charges attract one another and objects with the same charge repel each other
In terms of electricity, what does AC stand for?
Alternating current
Charge is a measure of electrons and uses the unit...
Coulombs
Who championed the type of electric current that powers your house?
Tesla
Edison led a smear campaign against AC and electrocuted animals with it to show how dangerous it was. What was the name of the elephant he electrocuted?
Topsy
Why does your hair stand on end when you rub a balloon it it?
The atoms in your have lost electrons to the balloon through the rubbing and now your strands of hair have positive charges so they repel each other.
In terms of electricity, what does DC stand for?
Direct current
Electric charge is represented by the symbol.....
(Q)