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9th Grade > Chapters 9-12 Review > Flashcards

Chapters 9-12 Review Flashcards

1
Q

A device that produces a strong magnetic field when electricity passes through it

A

Electromagnet

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2
Q

A simple device that converts electric to back and forth motion

A

Solenoid

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3
Q

A semiconductor that acts as a switch and amplifies a weak signal

A

Transistor

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4
Q

The study of electricity in a vacuum or semiconductors

A

Electronics

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5
Q

The process of replacing atoms of a semiconductor with atoms of another element

A

Doping

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6
Q

A device that changes the voltage of alternating current using electromagnetic induction

A

Transformer

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7
Q

Large computers designed to store and retrieve vast amounts of information

A

Mainframes

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8
Q

Data can be anywhere in a range

A

Analog

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9
Q

Positive terminal

A

Cathode

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10
Q

The most important device for converting electricity into motion

A

Electric motor

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11
Q

Lacks electrons

A

P-type semiconductor

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12
Q

Can not be recharged

A

Voltaic cell

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13
Q

The most common type of transistor

A

Field effect transistor

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14
Q

First mass-produced computer

A

UNIVAC I

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15
Q

A deceive that uses electromagnetic induction to produce electricity

A

Generator

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16
Q

The stored info and instruction for a computer to perform certain tasks

A

Software

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17
Q

The rate of charge flow

A

Current

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18
Q

Controls all other computer systems

A

Central processing unit

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19
Q

the largest computer network

A

Internet

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20
Q

A single chip that contains a complete CPU

A

Microprocessor

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21
Q

A collection of programs that display words and images on the screen

A

Operating system

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22
Q

Temporary storage

A

RAM

23
Q

The SI unit of electric charge

A

Coulomb

24
Q

The physical parts of a computer

A

Hardware

25
Q

The smallest directly accessible unit of data

A

Byte

26
Q

Instructions written in a programming language

A

Source code

27
Q

A device that produces a single binary output based on one or more binary inputs

A

Logic gate

28
Q

Narrow strip of metal in a case to limit circuit current

A

Fuse

29
Q

An electrical switch operated by an electromagnet

A

Relay

30
Q

Produces an electric current in a vacuum using a cathode

A

Thermionic emission

31
Q

Pieces of information stored in computers

A

Data

32
Q

Adds resistance to a circuit

A

Resistor

33
Q

The line connecting all point where a compass needle points true north

A

Agonic line

34
Q

The imaginary line that circles Earth halfway between two magnetic poles

A

Magnetic equator

35
Q

If two charged balloons are held 5 cm apart what is the force between them

A

25

36
Q

A small relatively inexpensive computer for use by one person at a time

A

Personal computer

37
Q

Allows a computer to communicate with the outside world

A

Input/output device

38
Q

Converts absorbed sunlight into electricity

A

Photovoltaic cell

39
Q

Passes a conducting fluid through a magnetic field

A

Magnetohydrodynamic generator

40
Q

Has an even strength throughout

A

Uniform field

41
Q

uses a magnet stroking an object to magnetize it

A

Magnetism by contact

42
Q

Produces light when a current is applied

A

Light emitting diode

43
Q

Indicate the direction and strength of a magnetic fluid

A

Lines of flux

44
Q

Processes information using electric circuits

A

Computer

45
Q

Electrostatic method of reproducing images

A

Xerography

46
Q

early device that stores electric charge

A

Leyden jar

47
Q

A device that transforms energy into a useful form

A

Load

48
Q

The SI unit of resistance

A

Ohm

49
Q

A device of one or more cells connected as a single source

A

Battery

50
Q

A device that converts pulses of electricity into sounds waves

A

Loudspeaker

51
Q

Electromagnetics reproduce messages by audible clicks

A

Telegraph

52
Q

A material that allows current to flow through with no resistance

A

Superconductor

53
Q

Built the first electrostatic generator

A

Otto von Guericke

54
Q

The transfer of charge by direct contact

A

Conduction

9th Grade (3 decks)

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