WorksheetsAdel science Feb test # chapter 3
Total questions: 87
Worksheet time: 44mins
Name
Class
Date
1.
What will happen in a parallel circuit if one of the loops is broken?
a)
electric current will not flow through any of the loops.
b)
electric current will still flow through the broken loop
c)
electric current will still flow through the unbroken loop
d)
the energy source will stop providing energy to move electric charges.
2.
Which of these materials is a conductor ?
a)
rubber
b)
chalk
c)
gold
d)
glass
3.
What is one use of an insulator ?
a)
it slows down the flow of electric current to produce heat and light .
b)
it stors electric energy for later use .
c)
it allows electric current to flow through it .
d)
it makes electricaly charged objects safe to handle .
4.
A material through which an electric current moves with difficulty .......
a)
conductor
b)
insulator
c)
circuit
5.
A material through which an electric current moves easily.........
a)
conductor
b)
circuit
c)
insulator
6.
Happens when positive and negative charge no longer balance...
a)
energy
b)
conductors
c)
static electricity
7.
One type of circuits in which electric charges can flow in only one circular path..
a)
parallel
b)
series
c)
static
8.
Which of these materials in an insulator ?
a)
copper
b)
metal
c)
glass
9.
Energy is never lost . it can not be made or destroyed .
a)
true
b)
false
10.
A lamp transforms electric energy to sound.
a)
true
b)
false
11.
A wind turbine transforms energy of motion to electrical energy .
a)
true
b)
false
12.
Fluorescent light bulbs use a filament . They produce less heat than incandescent light and use less electricity .
a)
true
b)
false
13.
A thin coiled resistor that transforms electrical energy to heat and light energy .
a)
filament
b)
circuit
c)
current
14.
A force that acts when two surfaces rub together .
a)
filament
b)
friction
c)
resistor
15.
An object that uses the energy in the circuit .
a)
filament
b)
resistor
c)
loop
16.
Moving charges generate electric energy , which can change into sound , light and heat .
a)
true
b)
false
17.
Most atoms have four different particles .
a)
true
b)
false
18.
Plastic , rubber , glass , and dry wood are good conductors .
a)
true
b)
false
19.
Copper , gold and silver are good insulators .
a)
true
b)
false
20.
If a switch in a flashlight is turned off , the circuit is open .
a)
true
b)
false
21.
A parallel circuit has two or more paths .
a)
true
b)
false
22.
A current can flow if the circuit has any gaps , or breaks.
a)
true
b)
false
23.
Atoms .
a)
have four different particles .
b)
have positive particles only
c)
have negative particles only .
d)
usually have the same number of positive and negative particles .
24.
.................... generate electrical energy .
a)
Moving charges
b)
positive particles
c)
non charged particles
d)
negative particles
25.
................. are the tiny building blocks of everything.
a)
charges
b)
atoms
c)
current
d)
pecies
26.
Static electricity can not move .
a)
true
b)
false
27.
Atoms usually have three different particles .
a)
true
b)
false
28.
Atoms can contain not charged particles .
a)
true
b)
false
29.
Static electricity happens when atoms have the same numbers of positive an negative charges.
a)
true
b)
false
30.
Charged particles can move between objects that are close to each other .
a)
true
b)
false
31.
A material through which an electric current can move easily.
a)
conductor
b)
insulator
c)
circuit
32.
An electric charge in motion is called ........
a)
series circuit
b)
friction
c)
electric current
d)
parallel circuit
33.
Which of these materials is not a conductor ?
a)
glass
b)
gold
c)
silver
d)
copper
34.
Electric charge move in the same way in all materials .
a)
true
b)
false
35.
Copper is not a good conductor .
a)
true
b)
false
36.
Electric current is the movement of charged particles .
a)
true
b)
false
37.
Which of these materials is not an insulator .
a)
glass
b)
rubber
c)
silver
d)
dry wood
38.
Shoes with a thick rubber soles .
a)
is not good for electricians .
b)
help protect electricians .
c)
can cause chocks.
d)
can be conductors.
39.
Insulators allow electric charge move easily .
a)
true
b)
false
40.
Glass and rubber can stop electric charge from flowing out a wire .
a)
true
b)
false
41.
the outside cover of a plug is usually made of metals .
a)
true
b)
false
42.
Glass is usually used on power lines .
a)
true
b)
false
43.
Dry wood is a good insulator .
a)
true
b)
false
44.
All materials can allow electric charges move easily through them .
a)
true
b)
false
45.
A parallel circuit .
a)
has on path
b)
does not have resistors
c)
has two or more paths .
d)
does not have wires
46.
............... transforms electric energy to other forms of energy.
a)
circuits
b)
filaments
c)
resistors
d)
wires
47.
electric current
a)
can flow easily through glass.
b)
can not flow through a circuit that has gaps or breaks
c)
can not pass through metals .
d)
can flow through an incomplete circuit .
48.
A series circuit
a)
has two or more baths .
b)
can work even if it has a gap .
c)
can not work if it has any break .
d)
does not have resistors .
49.
Electric circuits have ............... through which the charges flow
a)
resistors
b)
switches
c)
wires
d)
current
50.
If a loop in a parallel circuit is broken , the current will still flow the other loop .
a)
true
b)
false
51.
A parallel circuit has only one path .
a)
true
b)
false
52.
Resistors transform electric energy to other forms .
a)
true
b)
false
53.
Which is not part of a circuit .
a)
resistors
b)
switch
c)
wires
d)
insulator
54.
A circuit is closed if
a)
it has at least on break .
b)
it has resistors.
c)
it has no breaks .
d)
it has a bunt out bulb .
55.
A circuit is open if
a)
it has one path
b)
it has wires
c)
the switch is turned on
d)
it has at least one break .
56.
If a switch in a flashlight is turned off , the circuit is open .
a)
true
b)
false
57.
A circuit must have an energy source .
a)
True
b)
false
58.
Energy sources
a)
a circuit can work without energy sources .
b)
batteries and electrical outlets are examples of energy sources
c)
A circuit is closed has an energy source if it does not have an energy source
59.
A switch in a circuit help control open and close it.
a)
true
b)
false
60.
In parallel circuit
a)
the current that flow through on path , does not have to flow the other path .
b)
charges flow in one direction.
c)
a burnt out bulb opens the circuit
d)
each path leave the power source an does not return back to it .
61.
In a series circuit
a)
charges flow in two directions .
b)
any break or missing bulb does not open the circuit .
c)
charges flow in one direction
d)
there is more than one paths .
62.
Static means
a)
charged
b)
moving
c)
positive
d)
not moving
63.
Energy can be made or destroyed .
a)
true
b)
false
64.
Energy can transform or change form .
a)
true
b)
false
65.
Wind can change to electrical energy .
a)
true
b)
false
66.
pluck a guitar
a)
motion energy is transforms to heat
b)
sound energy transforms to motion
c)
motion energy transforms to sound
d)
electric energy transforms to motion
67.
rub hands
a)
heat energy transforms to motion
b)
motion energy transforms to heat .
c)
motion energy trans forms to light
d)
heat energy transforms to sound
68.
rub hands
a)
circuit
b)
conduct
c)
friction
d)
light
69.
friction
a)
heat is given off
b)
conduct electricity
c)
light energy is given
d)
means charging
70.
a wind turbine
a)
transforms light energy to heat
b)
transforms motion energy to electricity
c)
transforms electric energy to motion
d)
transform motion to heat
71.
Kilowatt- hour
a)
series circuit
b)
parallel circuit
c)
unit to measure electrical energy .
d)
filament
72.
Incandescent light bulbs
a)
give less heat and more light .
b)
give more heat and less light .
73.
which is more energy efficient at producing light ?
a)
incandescent bulbs
b)
fluorescent bulbs
74.
if an incandescent bulb burns for 1.000 kilowatt-hours, how much energy is used for light ?
a)
100 kilowatt-hour
b)
10 kilowatt-hour
c)
750 kilowatt-hour
d)
50 kilowatt-hour
75.
if an fluorescent bulb burns for 1.000 kilowatt-hours, how much energy is used for light ?
a)
750 kilowatt-hour
b)
500 kilowatt-hour
c)
10 kilowatt-hour
d)
75 kilowatt-hour
76.
when electrical current pass through aresistor
a)
wires are cut
b)
it gives off heat
c)
resistors become cold
d)
the circuit is open
77.
a toaster
a)
transforms electric energy to sound
b)
has more coils that allow it give off more heat .
c)
transforms heat energy to electric
78.
coils
a)
are good insulators
b)
help wires get cooler
c)
are found in toasters and hair dryers as resistors
d)
help stop flow of electric charge.
79.
A resistor that gets very hot and give off light as electrical current pass through it .
a)
friction
b)
outlet
c)
energy source
d)
filament
80.
Objects with resistors change energy to heat and light .
a)
true
b)
false
81.
an electric charge in motion
a)
insulator
b)
conductor
c)
electric current
d)
parallel circuit
82.
the resistor in a light bulb is called
a)
filament
b)
insulator
c)
power source
d)
electric charge
83.
which material would be the best insulator for a metal wire ?
a)
silver
b)
copper
c)
glass
d)
graphit
84.
five light bulbs are wired in one circuit . three bulbs are lit , two are not . what type of circuit is this ?
a)
series circuit
b)
parallel circuit
c)
open circuit
d)
short circuit
85.
which of these is caused by the energy of motion ?
a)
resistor
b)
conduction
c)
friction
d)
filament
86.
washing machine
a)
transform electricity into motion energy
b)
transform motion into electric energy
c)
transform electricity into light energy
d)
transform heat into motion energy
87.
electric current can not flow in a series circuit if
a)
the circuit contains an insulator
b)
the circuit contains a resistor
c)
the circuit has only one loop in it
d)
there is a break in the circuit
100 %
