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10.1: Electricity, magnetism, and motion
10.2: Generating electric current
10.3: Using electric power
10.4: Batteries
Past chapters
100
The ability to move an object some distance.
What is energy?
100
Uses motion to produce a current.
What is an electric generator?
100
The unit of measurement for power.
What is a watt?
100
The process by which substances change into new substances with different properties.
What is a chemical reaction?
100
This means to exert a force on an object that causes it to move.
What is work?
200
A device used to measure small currents in a circuit.
What is galvanometer?
200
An electrical current that consists of charges that move back and forth in a circuit.
What is alternating current?
200
P = V X I
What is the formula for power?
200
In this type of electrochemical cell the eletrolyte is a paste.
What is a dry cell?
200
Gears are an example of this type of machine.
What is a compound machine?
300
A part of an electric motor that takes the current and reverses the flow.
What is a commutator?
300
When a conductor moves across a magnetic field.
What is electromagnetic induction?
300
This device increases or decreases voltage.
What is a transformer?
300
This scientist created the first battery with layers of zinc, silver, and paper soaked in salt water.
Who is Alessandro Volta?
300
This happens when gravity is the only force exerted on an object.
What is freefall?
400
A device that converts electrical energy into mechanical energy.
What is an electric motor?
400
This produces the mechanical energy needed to produce an electrical current in a generator.
What is turbine?
400
A type of transformer needed before current can enter a home or business.
What is a step-down transformer?
400
This is made up of two or more electrochemical cells in a series.
What is a battery?
400
This law states that the total momentum of any group of objects remains the same unless acted on by an outside force.
What is the law of conservation of momentum?
500
These help connect the electrical current to the commutator in an electic motor.
What are the brushes?
500
This resource can be replenished while this resource can not.
What is renewable and nonrenewable resources?
500
This scientist believed that alternating current was the key to transferring current over long distances.
Who is Nikola Tesla?
500
This device works when a chemical reaction takes place with the electrodes and electrolyte, one electrode is positively charged the other negatively charged then a current is produced when connected to a circuit.
How does an electrochemical cell work?
500
Any force that causes an object to move in a circle.
What is centripetal force?