New Abeka Science Matter & Energy Exam Test 9

What is the smallest directly assessable unit of a data in a computer?

Byte

The process of replacing atoms of a semiconductor, with atoms of another element is called

Doping

A semiconductor that lacks electrons is an ___ semiconductor

p-type

What is the order of road signs from least to greatest electrical charge concentration

3,1,2,4

What are pieces of information stored in computer called

Data

A lithotripsy machine is a medical device that uses high-frequency sound waves break up kidney stones, solid objects that may form in the kidneys. The sound waves break the stones into smaller pieces that are naturally removed from the body. Where does the energy to break up the kidney stones come from

Electrical energy is converted into wave energy

produces a strong magnetic field when electricity passes through it

Electromagnet

- The branch of the study of electricity, that deals with the behavior in motion of electrons in a vacuum or in a semi conductor is

Electronics

What are the actual physical components of a computer called?

Hardware

What allows a computer to communicate with the outside world or a user to communicate with the computer?

Input/output device

What is the largest computer net work

Internet

What are the devices developed to store electric charge?

Leyden jar

What is a semiconductor device that produces light when a direct current is applied

Light emitting diode

Armando decided to decorate his bedroom with a strand of Christmas lights. He tested the strands of lights and found that one of the bulbs was burnt out, but all of the other bulbs were lit. He replaced the burnt out bulb with a new bulb, and it lit up. What is the scientific explanation for the situation?

Lights from a parallel circuit, and the new bulb made a closed circuit

What is the term for a device that transforms the energy of an electric current into another use full form of energy

Load

What does a flux demonstrate in the image?

Magnet have unlike poles near each other

What is a collection of programs that contain instructions for displaying words and images on the screen for a user

Operating system

Who built the first electrostatic generator

Otto Von Guericke

What small, relatively inexpensive computer designed for use by one user at a time

Personal computer

What type of computer is used for temporary storage?

Ram

What is an electrical switch operated by an electromagnet called

Relay

Electrical device designed to add resistance to a circuit

Resistor

the stored information and set of instructions that direct a computer to perform certain task is the

Software

What large, extremely powerful computer design for rapidly performing complex calculations

Super computer

What Communication device uses electromagnets to reproduce messages by means of audible clicks

Telegraph

Jaden lives in for Woodhill Drive. He converted the numbers of his home address by hand and came up with 11001. He then enter this value into a computer program. According to the program this number is decimal 25. What is wrong with the value he entered?

The fifth digit should be 0

Austin used an uncharged electroscope to demonstrate that like charges repel by induction. As he moved a negatively, charged rod toward the knob of the electroscope, the leaves separated. How would touching the knob with a rod affect the leaves of the electroscope

The leaves will remain separated

Increases or decrease the voltage of an alternating current using electromagnetic induction

Transformer

Americas first mass produced computer was?

UNIVAC I

What the line connecting all points were a compass needle points true North

agonic line

The type of data that can have any possible value within a specified range is called __ data?

analog

The positive terminal of voltaic or storage cell contacts. the cells?

cathode

Electronic device, that processes information using electrical circuits

computer

What is the transfer of an electric charge by direct contact between objects

conduction

What the SI unit of electric charge?

coulomb

Rate of charge flow is called

current

The most common type of transistor used today is the ___ transistor

field-effect

Uses a narrow strip of metal in a protective, insulated case to limit current throughout a circuit

fuse

uses electromagnetic induction to produce electricity

generator

The number system that is baed on powers of sixteen is the __number system

hexadecimal

What are the imaginary lines that indicate the direction and strength of a magnetic field called?

lines of flux

Produces a Single binary output based on one or more binary inputs

logic gate

What does converts pulses of electricity in to sound waves?

loud speaker

What the imaginary line that circles earth halfway between the two magnetic poles

magnetic equator

What is the word of magnetism in which an object is permanently magnetized by stroking a magnet against the object?

magnetizing by contact

What of generator works by passing a conducting fluid through a magnetic field?

magnetohydrodynamic generator

Large components designed to store and retrieve vast amounts of information are

mainframes

Is a single chip that contains a complete CPU

microprocesser

What is the SI unit of resistance?

ohm

What device converts absorbed sunlight directly into electricity?

photovoltaic cell

Substances that can be easily magnetized are considered magnetically __?

soft

Simple device that converts electricity to back-and-forth motion

solenoid

What is a material that allows current to flow through it with no resistance

super conductor

What process produces an electric current in a vacuum using a heated Cathod

thermionic emission

semiconductor device that can perform the same function as a vacuum to Tryon, such as acting as a switch amplifying week signals

transistor

A simple, vacuum tube consisting of three electrodes is

triode

What is an electric field with even strength throughout?

uniform field

The type of electrochemical cell that is not designed to be recharged is the ___ cell?

voltaic

What is the electrostatic method of reproducing image on paper?

xerography

What is the final attraction force between two charged objects win the distance is reduced to 1/5 of the original distance

25 times the original force

What devices consist of one or more electrochemical cells connected in series to produce a single source of current

Battery

What part of a computer controls, all other systems of the computer

Central processing unit