Electricity
What is an electric charge?
A property that leads to electromagnetic interactions between the particles that make up matter
What is an electric current?
An electric current is the rate of flow of electric charges
What is an electric circuit?
A complete closed path through which electric charges can flow
What is a magnet?
Any material that attracts iron or objects made of iron
What is an electronic device?
A device that is able to control the flow of electrons using integrated circuits
What are the three ways in which objects can gain or lose electrons?
Friction, contact, and induction
What are the two kinds of current?
Direct and alternating
What are the three basic parts to an electric circuit?
Energy source, electrical conductor, and load
What is a magnetic force?
The push or pull exerted when you bring two magnets together
What is an integrated circuit?
Single, tiny chip of specialty treated silicon containing many circuit parts
What is static electricity?
The buildup of electric charge on an object
What is voltage?
Amount of work required to move each unit of charge between two points
What is a tool that can be used to model electric circuits?
Circuit Diagrams
What are two forces in nature that can act at a distance?
Electrostatic Force and Gravity
What are the two kind of signals used by electronics?
Analog and Digital
What affects the size of the electric force?
Distance between two objects
What is resistance?
Opposition to the flow of electric charge
What is a switch?
Device that turns electrical devices on and off
What can decide if a material is magnetic or not?
Depends on the material's atoms
What is a binary code?
A pattern that represents information in a digital signal
What are electrical conductors, electrical insulators, and semiconductors?
Electrical conductors are materials through which charges can move freely. Electrical insulators are materials through which charges cannot move easily. Semiconductors are special classes of materials that conduct electric charge better than electrical insulators but not as well as electrical conductors.
What four factors affect resistance?
Composition, thickness, temperature, and length
What are the two types of circuits?
Series and Parallel
What are domains?
Groups of atoms where the south and north poles line up and make a strong magnetic field
What is a computer?
Any electronic device that performs tasks by following instructions given to it