Chapters 9-12 Review

Question 1

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

Answer 1

Electromagnet

Question 2

A simple device that converts electric to back and forth motion

Answer 2

Solenoid

Question 3

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

Answer 3

Transistor

Question 4

The study of electricity in a vacuum or semiconductors

Answer 4

Electronics

Question 5

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

Answer 5

Doping

Question 6

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

Answer 6

Transformer

Question 7

Large computers designed to store and retrieve vast amounts of information

Answer 7

Mainframes

Question 8

Data can be anywhere in a range

Answer 8

Analog

Question 9

Positive terminal

Answer 9

Cathode

Question 10

The most important device for converting electricity into motion

Answer 10

Electric motor

Question 11

Lacks electrons

Answer 11

P-type semiconductor

Question 12

Can not be recharged

Answer 12

Voltaic cell

Question 13

The most common type of transistor

Answer 13

Field effect transistor

Question 14

First mass-produced computer

Answer 14

UNIVAC I

Question 15

A deceive that uses electromagnetic induction to produce electricity

Answer 15

Generator

Question 16

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

Answer 16

Software

Question 17

The rate of charge flow

Answer 17

Current

Question 18

Controls all other computer systems

Answer 18

Central processing unit

Question 19

the largest computer network

Answer 19

Internet

Question 20

A single chip that contains a complete CPU

Answer 20

Microprocessor

Question 21

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

Answer 21

Operating system

Question 22

Temporary storage

Answer 22

RAM

Question 23

The SI unit of electric charge

Answer 23

Coulomb

Question 24

The physical parts of a computer

Answer 24

Hardware

Question 25

The smallest directly accessible unit of data

Answer 25

Byte

Question 26

Instructions written in a programming language

Answer 26

Source code

Question 27

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

Answer 27

Logic gate

Question 28

Narrow strip of metal in a case to limit circuit current

Answer 28

Fuse

Question 29

An electrical switch operated by an electromagnet

Answer 29

Relay

Question 30

Produces an electric current in a vacuum using a cathode

Answer 30

Thermionic emission

Question 31

Pieces of information stored in computers

Answer 31

Data

Question 32

Adds resistance to a circuit

Answer 32

Resistor

Question 33

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

Answer 33

Agonic line

Question 34

The imaginary line that circles Earth halfway between two magnetic poles

Answer 34

Magnetic equator

Question 35

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

Answer 35

25

Question 36

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

Answer 36

Personal computer

Question 37

Allows a computer to communicate with the outside world

Answer 37

Input/output device

Question 38

Converts absorbed sunlight into electricity

Answer 38

Photovoltaic cell

Question 39

Passes a conducting fluid through a magnetic field

Answer 39

Magnetohydrodynamic generator

Question 40

Has an even strength throughout

Answer 40

Uniform field

Question 41

uses a magnet stroking an object to magnetize it

Answer 41

Magnetism by contact

Question 42

Produces light when a current is applied

Answer 42

Light emitting diode

Question 43

Indicate the direction and strength of a magnetic fluid

Answer 43

Lines of flux

Question 44

Processes information using electric circuits

Answer 44

Computer

Question 45

Electrostatic method of reproducing images

Answer 45

Xerography

Question 46

early device that stores electric charge

Answer 46

Leyden jar

Question 47

A device that transforms energy into a useful form

Answer 47

Load

Question 48

The SI unit of resistance

Answer 48

Ohm

Question 49

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

Answer 49

Battery

Question 50

A device that converts pulses of electricity into sounds waves

Answer 50

Loudspeaker

Question 51

Electromagnetics reproduce messages by audible clicks

Answer 51

Telegraph

Question 52

A material that allows current to flow through with no resistance

Answer 52

Superconductor

Question 53

Built the first electrostatic generator

Answer 53

Otto von Guericke

Question 54

The transfer of charge by direct contact

Answer 54

Conduction