Show:
Static Electricity
Electrical Currents
Batteries
Electric Circuits
Electronics
100
What is the sudden release of static electricity between two differently charged objects?
Electrostatic discharge
100
What is the pressure of an electric current?
Voltage
100
What is a device that converts chemical energy into electrical energy. The working part of a battery?
Electrolytic Cell
100
What is an electric circuit that is broken into several branches so the current flows in multiple branches.
Parallel Circuit
100
What is a small sandwich of two different types of semiconductors.
Transistor
200
Fill in the blank. Where do _________ go when you discharge them?
Electrons
200
Fill in blank. The ________ is the rate at which electrons flow through a wire in a given period.
Amperage
200
A portable source of electrical energy stored in chemical form containing two or more cells is _________?
Battery
200
The ____ is the part of an electrical pathway in an electric circuit that uses current, such as a bulb or motor.
Load
200
A semiconductor with two electrodes that only lets current flow in one direction is a _______.
Diode
300
Why do you get shocked when you walk on carpet?(Complete answer)
You get shocked when you walk on the carpet because electrons build up on your feet which makes you shock someone because you have opposite charges.
300
What do superconductors do to help the conduction of electricity?
They conduct electric energy without any loss of it
300
Explain the difference between wet cell and a dry cell.
A wet cell contains liquid electrolyte and a dry cell contains a paste like substance not a liquid.
300
Name the three parts of a circuit.
a. power source b. load c. conductor
300
How are microchips different from transistors?
Microchips have the circuits printed on them and and transistors have circuits inside of them.
400
What does the word static actually mean?
To stay
400
What do all conductors have in common? What do all insulators have in common?
Conductors:They were all made out of metal which is a conductor. Insulators:They were all thick and they were all made out of heavy material.
400
What is a battery's main function?
To supply the load with electrical energy
400
What is an advantage of using a parallel circuit over a series circuit?
In the parallel circuit it is an advantage because you can have more than one load.
400
What is a smart home?
A smart home is a home controlled by a phone
500
Why does lightning flash in a thunderstorm?
Lightning flashes in a thunderstorm because there are positive charges on the top of the cloud and negative charges on the bottom of the cloud which are attracted to the ground's positive charges. They react and make a spark which then smokes, the smoke is what we call lightning.
500
Look around the classroom. What are five objects that are conductors? What are five objects that are insulators?
Conductors: Washer, penny, scissors, door handle, computer cart door, desk leg, chair leg, paper filer, projector cart, heater, sink handle, and door hinge Insulators: Marble, magnet, desert rose, paper, eraser, pencil case, plastic part of the chair, folder, binder, planner, hair, clothes, hand, pencil, and stool
500
Describe the early history of batteries.
It all started with a frog leg. Luigi's friend was doing an experiment with a brass hook and a frog leg. He accidentally touched the scalpel to the brass hook and the frog leg twitched. Volta was told about it and he made a battery by combining cardboard, zinc, and silver in a certain pattern. Later, other people such as Daniell, Callaud, Pogendorff, and Grove improved his design.
500
Give a description of a series circuit and a description of a parallel circuit.
Series: When the electrical current flows in a single path Parallel: When the circuit is broken into several branches so the current flows in multiple paths.
500
Name four ways that the Internet has changed how we live. Be specific.
1. Transferred power from a whole room into a phone 2. We have Google, so we don't need to have encyclopedias 3. Homes that are completely controlled by your phone 4. Electrical cars are more efficient and eco-friendly