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9th Science EXAM Test 9

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