Static Electricity
The definition of static charge.
This method of creating a charged object requires the rubbing of two objects together.
What is "Charging by Friction"?
This term describes how difficult it is for electrons to move through an object.
What is resistance?
What are the 4 main components of a circuit?
This type of material allows charge to move freely through it.
What is a conductor?
This subatomic particle is responsible for moving and building up (or leaving) an object, creating static charge).
A neutral rod touches a neutral electroscope. What happens to the electroscope's "leaves"?
Nothing.
The amount of "push" electrons experience is measured using this unit.
Volt (V).
Draw the symbol for a 1-cell battery. Indicate the positive and negative ends.
Teacher will show the answer on the board.
About how fast do electrons move in a circuit?
A positively-charged object and a negatively-charged object will do this, if brought close together.
What is attract?
This type of material builds up electric charge by friction quite easily.
What are insulators?
How is "current" different from the flow of electrons in a wire?
Draw a diagram of a circuit that contains two bulbs connected in parallel.
Teacher will show the answer on the board.
If there are two 3V batteries connected in series, how much voltage is being supplied to the circuit?
6V
Draw a positively charged object (using a charge diagram).
Teacher will demonstrate answer.
These two ways to charge an object only happens if we begin with a second, already charged object.
What are "Charging by Induction" and "Charging by Conduction"?
Describe the difference between static electricity and current electricity.
Static electricity is charge that remains stationary on an object. Current electricity continuously flows through wires.
Draw a diagram of a circuit that contains both an ammeter (to measure current) and a voltmeter (to measure voltage).
Teacher will show picture on board.
These are the two types of current electricity (hint: it's also the name of a band!)
AC, DC
Explain why a negatively-charged balloon can stick to a neutrally-charged wall.
Teacher will show correct response on screen.
Explain why the build-up of static charge on your person is more predominant in winter than in summer.
In the winter, the temperatures are colder. Cold air holds less moisture than warm air, so we have a lower humidity level and less water vapor in the air. With less water vapor in the air to conduct this charge away from you, your body can carry a higher charge.
Explain how a turbine/generator works.
Water (hydro), wind, or steam (coal, nuclear, etc) moves through and turn the blades of a turbine. The turbine is connected to a generator. The generator has coils of wire and magnets. The spinning turbine spins the coils of wire/magnets in the generator. This causes electrons to flow through the wire.
If switch B is open (and all other switches are closed), which lights will be on?
See picture: https://docs.google.com/document/d/1FWyf_jwYzbvC4DAo7xnLGoWB4JTbDTk3Kap02OhEo6w/edit
1 and 2
Describe the difference between a series circuit and a parallel circuit.
A series circuit has only one path for electrons to flow through. A parallel circuit has two or more paths that electrons can flow through.