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9th Science EXAM Test 9

Across
The stored information and set of instructions that direct a computer to perform certain tasks
The branch of study of electricity that deals with the behavior and motion of electrons in a vacuum or in semiconductors is called
What is the SI unit of resistance
A semiconductor that lacks electrons is a ? semiconductor
What process produces an electric current in a vacuum using a heated cathode?
A simple vacuum tube consisting of three electrodes is
What are the imaginary lines that indicate the direction and strength of a magnetic field
The rate of charge flow
The process of replacing atom of a semiconductor with atoms of another element
What are pieces of information stored in computers called
What is the transfer of an electric charge by direct contact between objects
What is the method of magnetism in which an object is permanently magnetized by stroking a magnet against an object is magnetizing by?
Down
Large computers designed to store and retrieve vast amounts of information
The most common type of transistor used today is the ? transistor
America's first mass- produced computer
The type of electrochemical cell that is not designed to be recharged is the ? cell
Substances that can be easily magnetized are considered magnetically ?
What is the imaginary line that circles Earth halfway between the two magnetic poles?
What is the SI unit of electric charge?
The positive terminal of a voltaic or storage cell contacts the cell's
What type of computer memory is used for temporary storage
The number system that is based on powers of sixteen is the ? number system
The type of data that can have any possible value within a specified range is called ? data
What is the general term for a device that transforms the energy of an electric current into another useful form of energy