Charged up!
Charging an object by rubbing two items together where one transfers electrons to the other.
What is Charging by Friction?
The rate of flow of electrons moving past a fixed point in an electrical circuit.
What is electrical current?
A short/long metal wire will have less resistance than a shorter/longer metal wire.
What is a short metal wire will have less resistance than a longer metal wire?
A circuit that does not have a complete connection between the 2 sides of the power source; as a result, current does not flow.
What is an open circuit?
The fundamental force behind electricity and magnetism.
What is Electromagnetic Force?
Charging an object without direct contact between the object and a charge.
What is Charging by Induction?
In order to get electrical charges moving, you need this.
What is something that uses electromagnetic force (voltage source, closed circuit)?
Current that flows from the positive side of the battery to the negative side.
What is Conventional Current?
If the charge of one object is doubled, the force is _______?
What is doubled?
Daily Double
A cluster of many atoms that have their magnetic fields aligned and so act as a magnet.
What is a magnet domain?
Charging an object by allowing it to come into contact with an object that already has an electrical charge.
What is Charging by Conduction?
Daily Double
A simple household item that uses electromagnetic force to get electrical charges moving.
What is a battery?
The measure of electron "push" in a circuit.
What is Voltage (volts)?
How a light "switch" works.
What is when it is off, the circuit is open so no current can flow and when it is on, the circuit is closed to the current flows?
This depends on the percentage of the domains in the material are aligned.
What is the strength of the magnet?
Why the foil strips stayed apart when you touched the balloon to the paper clip in the experiment last week.
What is some of the balloon's extra electrons were able to flow into the paper clip?
The 2 things you need to know to know how much an electric circuit can do.
What are the current (amps) and the voltage (volts)?
A material's ability to oppose the flow of electric current.
What is resistance?
Why a light bulb burns out.
What is wear and tear on the filament?
The name of the two sides of a magnet.
What are the north pole and the south pole?
The way the balloon picked up some electrons when you rubbed it on your hair in the experiment last week.
What is by friction?
The reason why touching and exposed battery cable on a car that is being started can kill you while a small electrical toy running on a 9-volt battery will not.
What is the car has several hundred amps running through the ignition circuit? (Although car has relatively low voltage, it has high amperage)
The 2 reasons why metal wire is usually coated with plastic or rubber.
What are these materials are electrical insulators that prevent electric shocks to users & stop short circuits. Second, the coating acts as a protective layer against environmental damage?
Daily Double
The unit an electric current is measured in.
What is amperes (amps)?
Why permanent magnets exist.
What is because specific metals have an atomic structure that allows their internal magnetic fields to stay aligned (phenomenon is known as ferromagnetism- forces unpaired electrons to align in the same direction, creating a permanent magnetic field).