Abeka 9Th Grade Science (Final Exam) Test 12

Front 1

Which type of radioactive decay releases an electron?

Back 1

Beta decay

Front 2

The measure of the amount of disorder in a system is ____.

Back 2

Entropy

Front 3

The transfer of heat by direct contact is called ____.

Back 3

Conduction

Front 4

What process changes a liquid into a solid?

Back 4

Freezing

Front 5

What is the energy associated with an object's motion?

Back 5

Kinetic Energy

Front 6

What fundamental force binds atomic nuclei together?

Back 6

Strong nuclear force

Front 7

The ratio of the density of a substance to the density of a standard is a specific ____.

Back 7

Gravity

Front 8

What is the SI unit of mass?

Back 8

Kilogram

Front 9

Using proper significant figures, what is the answer to the problem (55.0 m/s)(3.029 s)?

Back 9

167 m

Front 10

What is the amount of space that matter takes up?

Back 10

Volume

Front 11

A device that uses a p-n junction to allow current flow in only one direction is a semiconductor _____.

Back 11

Diode

Front 12

A semiconductor that produces electric current through the photovoltaic effect is a _____.

Back 12

Photovoltaic cell

Front 13

A vacuum tube that has three electrodes is called a ___.

Back 13

Triode

Front 14

A program stored in a form that the computer's CPU can understand, as a sequence of numbers representing basic operations, is a ____ language.

Back 14

Machine

Front 15

The circuit board that connects all the computer's components is the _____.

Back 15

Motherboard

Front 16

A mixture in which molecules of a substance are not completely mixed is a ____.

Back 16

Heterogeneous mixture

Front 17

Which type of chemical bond involves sharing electrons between two atoms?

Back 17

Covalent bond

Front 18

Which intermolecular force is caused by permanent partial charges on molecules?

Back 18

Dipole-dipole force

Front 19

What is a substance composed of two of more types of atoms bonded together?

Back 19

Compound

Front 20

The process of splitting an atomic nucleus into smaller pieces is nuclear ____.

Back 20

Fission

Front 21

In the periodic table of the elements, elements are arranged by ____.

Back 21

Atomic number

Front 22

What type of neutral subatomic particle is found in the atom's nucleus?

Back 22

Neutron

Front 23

A device that processes information using electronic circuits is called a ____.

Back 23

Computer

Front 24

Integrated circuits are preferred to diodes and transistors because integrated circuits are more reliable, ____, and ____.

Back 24

Smaller, cheaper

Front 25

The two main types of software are system software and ____ software.

Back 25

Application

Front 26

An alcohol is an organic compound containing a ____ group.

Back 26

Hydroxyl

Front 27

What is the process in which the body produces and uses energy from food?

Back 27

Metabolism

Front 28

What is the energy carrier of the cell?

Back 28

ATP

Front 29

The number in a chemical equation that indicates how many molecules or formula units are involved in a reaction is the _____.

Back 29

Coefficient

Front 30

What is a random change in DNA that occurs when a gene is damaged or copied incorrectly?

Back 30

mutation

Front 31

What vector represents the rate of change in an object's position?

Back 31

velocity

Front 32

What is the SI unit of force?

Back 32

Newton

Front 33

The actual multiplication of force provided by a simple machine is the machine's ____.

Back 33

AMA

Front 34

The product of the object's mass and velocity is its ____.

Back 34

Momentum

Front 35

Sound with frequency below the range of human hearing is _____ sound.

Back 35

Infrasonic

Front 36

Consonance and dissonance are caused by _____ of sound waves.

Back 36

Interference

Front 37

A change in a sound's frequency that is caused by an object's motion demonstrates the _____ effect.

Back 37

Doppler

Front 38

Find the speed of a wave that has a wavelength of 4.0 m and a frequency of 2.0 Hz.

Back 38

8.0 m/s

Front 39

The additive primary colors of light are ____.

Back 39

Red, green, and blue

Front 40

Name the bundles or packets of energy that electromagnetic waves travel as.

Back 40

Photons

Front 41

What form of electromagnetic radiation causes sunburns?

Back 41

Ultraviolet radiation

Front 42

What is the world's largest computer network?

Back 42

Internet

Front 43

What type of device converts digital data into analog data?

Back 43

Modem

Front 44

What is a versatile computer directed machine that can be programmed to do different tasks without human intervention?

Back 44

Robot

Front 45

What term refers to any general-purpose computer designed to be accessed by many users at once?

Back 45

Server

Front 46

What term refers to the actual physical components of a computer?

Back 46

Hardware

Front 47

How many bits are in a byte?

Back 47

8

Front 48

What branch of electricity deals with the behavior and motion of electrons in a vacuum or special materials?

Back 48

Electronics

Front 49

What is a single chip containing a complete CPU called?

Back 49

Microprocessor

Front 50

What is the collection of programs that contain instructions for displaying words and images on the screen, saving information on the disk drive, and detecting what the user types on the keyboard.

Back 50

Operating system

Front 51

What type of particle are cathode rays made of?

Back 51

Electrons

Front 52

A simple device for detecting electric charges is a ____.

Back 52

Electroscope

Front 53

Modern device for storing electric charges is a ____.

Back 53

Capacitor

Front 54

A material that has several unpaired electrons per atom and is strongly attracted to magnets is ____.

Back 54

Ferromagnetic

Front 55

The declination of Earth's magnetic field is 0° at the _____.

Back 55

Agonic line

Front 56

A circuit with loads arranged in a single branch so that the current passes through all the loads is a ____ circuit.

Back 56

Series

Front 57

A device for communicating over long distances using electromagnets is a ____.

Back 57

Telegraph

Front 58

If the current in a circuit is 10.0 A and the voltage is 5.0 V, how much power does the circuit generate?

Back 58

50. W

Front 59

What device produces an electric current using electromagnetic induction?

Back 59

Generator

Front 60

In the manufacture of integrated circuits, raw materials are coded onto a wafer made of ____.

Back 60

Silicon

Front 61

What is the most common type of transistor?

Back 61

Field-effect transistor

Front 62

What system uses codes called URI's to identify specific pieces of information and indicate what method should be used to access the information?

Back 62

World Wide Web

Front 63

What is a system of using the Internet to access remote computer resources that store, process, and manage users' data?

Back 63

Cloud computing

Front 64

What is the "brain" if a computer?

Back 64

CPU

Front 65

What system allows a computer to store programs and information?

Back 65

Memory

Front 66

What is not a reason for doping a semi conductor?

Back 66

Reduces cost

Front 67

What is used to store information permanently?

Back 67

ROM

Front 68

A computer designed to perform only a few functions is a _____ -purpose computer.

Back 68

Special

Front 69

The photovoltaic cell and light- emitting diode are examples of ____.

Back 69

Solid-state devices

Front 70

The first general-purpose electric computer was _____.

Back 70

ENIAC

Front 71

Relates the force needed to deform a solid and the amount of the deformation

Back 71

Hooke's law

Front 72

When chemical equilibrium is distributed, the system will react to at least partially offset the disturbance

Back 72

Le Châtelier's principle

Front 73

Lateral (sideward) pressure exerted by a moving fluid decreases as the fluid's speed increases

Back 73

Bernoulli's principle

Front 74

The idea that the universe is lawful, orderly, and operates according to physical laws

Back 74

Principle of causality

Front 75

Says that gravity is an effect of the geometry of space

Back 75

General theory of relativity

Front 76

The most commonly accepted evolutionary view of the origin of the matter and energy of the universe

Back 76

Big Bang theory

Front 77

If the pressure of a gas remains constant, the volume and temperature of the gas are directly proportional

Back 77

Charles's law

Front 78

States the relationship between voltage, current, and resistance

Back 78

Ohm's law

Front 79

Like poles repel, and unlike poles attract

Back 79

Law of magnetic poles

Front 80

The velocity of an object does not change unless the object is acted upon by an external force

Back 80

First law of motion

Front 81

The energy gained (or lost) by a system equals the energy lost (or gained) by the surroundings

Back 81

First law of thermodynamics

Front 82

The buoyant force experienced by an object exactly equals the weight of the fluid displaced

Back 82

Archimedes' principle

Front 83

The common coding system that requires only one byte per character is ____.

Back 83

ASCII

Front 84

The number system based on powers of 16 in the ____ number system.

Back 84

Hexadecimal

Front 85

The phenomenon in which an electric current flows from a hot filament to a positive electrode is ____ emission.

Back 85

Thermionic

Front 86

The type of data that can have any possible value with in a certain range is ____data.

Back 86

Analog

Front 87

A kilobyte equals _____ bytes.

Back 87

1,024

Front 88

The memory that a computer uses to store information temporarily is ____.

Back 88

RAM