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WorksheetsPhysical Science - Test 9
Total questions: 91
Worksheet time: 3hrs 2mins
Name
Class
Date
1.
What is the SI unit of current?
a)
amp
b)
coulomb
c)
ohm
d)
volt
2.
What type of current reverses direction at regular intervals?
a)
AC
b)
DC
c)
series current
d)
parallel current
3.
What is a material that allows current to flow through it with no resistance?
a)
conductor
b)
insulator
c)
resistor
d)
grounding
4.
What material allows current to flow through it with no resistance at all?
a)
superconductor
b)
conductor
c)
insulator
d)
resistor
5.
What is the transfer of an electric charge by direct contact between objects?
a)
conduction
b)
induction
c)
resistance
d)
rgrouding
6.
What is an electric field with even strength throughout?
a)
uniform field
b)
open circuit
c)
closed circuit
d)
parallel circuit
7.
What is the rate of charge flow?
a)
current
b)
voltage
c)
resistance
d)
charge
8.
What is the work per unit of charge done to move electric charges?
a)
voltage
b)
current
c)
resistance
d)
power
9.
What is the amount a certain object hinders electron flow?
a)
resistance
b)
conduction
c)
insulator
d)
coulomb
10.
What is the SI unit of resistance?
a)
ohm
b)
amp
c)
volt
d)
coulomb
11.
What is a material that does not allow current to flow through it?
a)
insulator
b)
conductor
c)
superconductor
d)
semiconductor
12.
What states that the strength of the attraction or repulsion between two charged objects is directly related to the strength of the charges and inversely related to the square of the distance between them?
a)
law of electric forces
b)
law of magnetic poles
c)
law of electric charges
d)
law of magnetic forces
13.
What is the process of diverting unwanted electric charge directly into the earth?
a)
grounding
b)
conducting
c)
insulating
d)
alternating
14.
What type of current flows in one direction without reversing?
a)
direct current
b)
alternating current
c)
series current
d)
parallel current
15.
What is a circuit that contains a complete path for electrons to flow through?
a)
closed circuit
b)
open circuit
c)
uniform field
d)
direct circuit
16.
What is the SI unit of voltage?
a)
voltage
b)
coulomb
c)
ohm
d)
amp
17.
What is a circuit with a gap that electrons cannot cross?
a)
open circuit
b)
series circuit
c)
parallel circuit
d)
closed circuit
18.
What is the transfer of electric charge without direct contact between the objects?
a)
induction
b)
conduction
c)
grounding
d)
resistance
19.
What is a circuit where the current flows through each load in a row?
a)
series circuit
b)
parallel circuit
c)
open circuit
d)
closed circuit
20.
What is the SI unit of electric charge?
a)
coulomb
b)
amp
c)
ohm
d)
volt
21.
What is a circuit where the loads are arranged in separate branches?
a)
parallel circuit
b)
series circuit
c)
open circuit
d)
closed circuit
22.
What opens or closes a circuit?
a)
switch
b)
fuse
c)
relay
d)
solenoid
23.
What is a narrow strip of metal in a protected, insulated case used to limit current?
a)
fuse
b)
capacitor
c)
load
d)
switch
24.
What is a device that produces a strong magnetic field when electricity passes through it?
a)
electromagnet
b)
photovoltaic cell
c)
transformer
d)
battery
25.
What converts electricity to back-and-forth motion?
a)
solenoid
b)
relay
c)
transformer
d)
telegraph
26.
What is a device that transforms the energy of an electric current into another useful form of energy?
a)
load
b)
solenoid
c)
generator
d)
capacitor
27.
What early device was developed to generate static electricity?
a)
Van de Graff generator
b)
Leyden jar
c)
lightning rod
d)
battery
28.
What early device was developed to store electric charge?
a)
Leyden jar
b)
Van de Graff generator
c)
solenoid
d)
telegraph
29.
What device consists of one or more electrochemical cells connected in series to produce a single source of current?
a)
battery
b)
capacitor
c)
solenoid
d)
electromagnet
30.
What device converts pulses of electricity into sound waves?
a)
loudspeaker
b)
telegraph
c)
motor
d)
generator
31.
What device uses electromagnets to reproduce messages by means of audible clicks?
a)
telegraph
b)
loudspeaker
c)
generator
d)
motor
32.
What device converts absorbed sunlight directly into electricity?
a)
photovoltaic cell
b)
voltaic cell
c)
storage cell
d)
battery
33.
What type of generator works by passing a conducting fluid through a magnetic field?
a)
magnetohydrodynamic generator
b)
electric generator
c)
electric motor
d)
transformer
34.
What is a semiconductor device that produces light when a direct current is applied?
a)
light-emitting diode
b)
solenoid
c)
fuse
d)
photovoltaic cell
35.
What is an electrical switch operated by an electromagnet?
a)
relay
b)
switch
c)
solenoid
d)
light-emitting diode
36.
Which type of electrochemical cell is not designed to be recharged?
a)
voltaic cell
b)
storage cell
c)
photovoltaic cell
d)
battery
37.
Which type of electrochemical cell is designed to be recharged?
a)
storage cell
b)
voltaic cell
c)
photovoltaic cell
d)
battery
38.
What is a device used to store a static electric charge?
a)
capacitor
b)
solenoid
c)
battery
d)
resistor
39.
What uses electromagnetic induction to produce electricity?
a)
electric generator
b)
electric motor
c)
load
d)
solenoid
40.
What is the most important device for converting electricity into motion?
a)
electric motor
b)
electric generator
c)
solenoid
d)
capacitor
41.
What device increases or decreases the voltage of an alternating current?
a)
transformer
b)
resistor
c)
capacitator
d)
photovoltaic cell
42.
What is an electrical device designed to add resistance to a circuit?
a)
resistor
b)
capacitor
c)
generator
d)
solenoid
43.
What are the imaginary lines that indicate the direction and strength of a magnetic field?
a)
lines of flux
b)
isogonic lines
c)
isoclinic lines
d)
agonic lines
44.
What states that unlike poles attract each other, but like poles repel each other?
a)
law of magnetic poles
b)
law of electric forces
c)
law of magnetic forces
d)
law of electric charge
45.
What is the method of magnetism in which an object is permanently magnetized by stroking a magnet against the object?
a)
magnetizing by contact
b)
magnetizing by induction
c)
magnetizing by electromagnetism
46.
What is the method of magnetism in which an object is temporarily magnetized by placing it within a magnetic field?
a)
magnetizing by induction
b)
magnetizing by contact
c)
magnetizing by electromagnetism
47.
What is the method of magnetism in which an object is temporarily magnetized by passing an electric current through it?
a)
magnetizing by electromagnetism
b)
magnetizing by induction
c)
magnetizing by contact
48.
What is a substance that can be easily magnetized?
a)
magnetically soft
b)
magnetically hard
49.
What is a substance that strongly resists changes to its magnetic field?
a)
magnetically hard
b)
magnetically soft
50.
What is the line connecting all points where a compass needle points true north?
a)
agonic line
b)
isogonic line
c)
isoclinic line
d)
lines of flux
51.
What is the imaginary line that circles Earth halfway between the two magnetic poles?
a)
magnetic equator
b)
isogonic line
c)
isoclinic line
d)
agonic lines
52.
What is the line which connects points of equal declination?
a)
isogonic line
b)
agonic line
c)
isoclinic line
d)
magnetic equator
53.
What is the line which connects locations with equal inclination?
a)
isoclinic line
b)
agonic line
c)
isogonic line
d)
magnetic equator
54.
Who built the first electrostatic generator?
a)
Otto von Guericke
b)
Robert Van de Graff
c)
Benjamin Franklin
d)
Albert Einstein
55.
Who discovered that lightning is static electricity?
a)
Benjamin Franklin
b)
Robert Van de Graff
c)
Otto von Guericke
d)
Albert Einstein
56.
What is the electrostatic method of reproducing images on paper?
a)
xerography
b)
magnetizing by induction
c)
conducting
d)
photovoltaic cell
57.
What is a small, relatively inexpensive computer designed for use by one user at a time?
a)
personal computer
b)
supercomputer
c)
mainframe
d)
server
58.
What is a large, extremely powerful computer designed for rapidly performing complex calculations?
a)
supercomputer
b)
personal computer
c)
mainframe
d)
server
59.
What type of computer can be accessed by many users at once?
a)
server
b)
personal computer
c)
mainframe
d)
supercomputer
60.
What type of computer is designed to store and retrieve vast amounts of information?
a)
mainframe
b)
personal computer
c)
supercomputer
d)
server
61.
What part of a computer controls all other systems of the computer?
a)
central processing unit
b)
motherboard
c)
integrated circuit
d)
microprocessor
62.
What is a single chip that contains a complete CPU?
a)
microprocessor
b)
motherboard
c)
integrated circuit
d)
hardware
63.
What is the largest computer network?
a)
internet
b)
world wide web
64.
What is a circuit board that connects all the computer’s components?
a)
motherboard
b)
central processing unit
c)
hardware
d)
microprocessor
65.
What is a collection of programs that contain instructions for displaying words and images on the screen for a user?
a)
operating system
b)
application software
c)
software
d)
hardware
66.
What are the different programs the direct the computer to perform specific tasks for the user?
a)
software
b)
hardware
c)
microprocessor
d)
RAM
67.
What type of computer memory is used for temporary storage?
a)
RAM
b)
ROM
c)
ASCII
d)
ENIAC
68.
What type of computer memory contains basic information that the computer needs to start?
a)
ROM
b)
RAM
c)
ASCII
d)
UNIVAC I
69.
What are the actual physical components of a computer?
a)
hardware
b)
software
c)
malware
70.
What is the smallest directly accessible unit of data in a computer?
a)
byte
b)
bit
c)
hexadecimal
d)
gigabyte
71.
What is one binary digit?
a)
bit
b)
byte
c)
a number
d)
9
72.
What number system is based on powers of sixteen?
a)
hexadecimal
b)
binary
c)
digital
d)
analog
73.
What is the system that assigns letters to binary code?
a)
ASCII
b)
RAM
c)
ROM
d)
UNIVAC I
74.
What process produces an electric current in a vacuum using a heated cathode?
a)
thermionic emission
b)
conduction
c)
induction
d)
electromagnetism
75.
What are pieces of information stored in a computer?
a)
data
b)
software
c)
input/output device
d)
triode
76.
What produces a single binary output based on one or more binary inputs?
a)
logic gate
b)
diode
c)
computer
d)
digital
77.
What is an electronic device that processes information using electrical circuits?
a)
computer
b)
telegraph
c)
solenoid
d)
light-emitting diode
78.
What is a semiconductor device that can perform the same functions as a vacuum-tube triode?
a)
transistor
b)
triode
c)
diode
d)
light-emitting diode
79.
What is the branch of the study of electricity that deals with the behavior and motion of electrons in a vacuum or in a semiconductor?
a)
electronics
b)
computer science
c)
physical science
d)
magnetism
80.
What is the process of replacing atoms of a semiconductor with atoms of another element?
a)
doping
b)
conducting
c)
grounding
d)
inducting
81.
What is a simple vacuum tube consisting of three electrodes?
a)
triode
b)
diode
82.
What is a simple vacuum tube consisting of two electrodes?
a)
diode
b)
triode
83.
What type of semi-conductor lacks electrons?
a)
p-type
b)
n-type
84.
What type of semi-conductor has extra electrons?
a)
n-type
b)
p-type
85.
What is the most common type of transistor used today?
a)
field-effect transistor
b)
junction transistor
c)
electronic transistor
d)
Van de Graff transistor
86.
What was the first mass-produced computer?
a)
UNIVAC I
b)
ENIAC
c)
iMac
d)
the Difference Engine
87.
What was the first general-purpose electronic computer?
a)
ENIAC
b)
UNIVAC I
c)
iMac
d)
a radio
88.
What is the stored information and set of instructions that direct a computer to perform certain tasks?
a)
application software
b)
operating system
c)
special-purpose software
d)
programming software
89.
What type of data can have any possible value within a specified range?
a)
analog data
b)
digital data
90.
What type of data can have only certain values within a specified range?
a)
digital data
b)
analog data
91.
What allows a computer to communicate with the outside world or a user to communicate with the computer?
a)
input/output device
b)
operating system
c)
hardware
d)
computers
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