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ACADEC 2025 Science Test #2

Total questions: 100

Worksheet time: 2hrs 54mins

Name
Class
Date
1.

A negatively charged particle ____________________

a)

possesses more protons than electrons

b)

possesses more electrons than protons

c)

has equal numbers of protons and electrons

2.

The circuit shown on the picture above is an example of a /an _______

a)

Closed Circuit

b)

Open Circuit

3.

What can we do to make this circuit pictured a "closed circuit" so the bulb lights up?

a)

connect wire to the terminal

b)

disconnect the wire from the lightbulb

c)

screw in the lightbulb

d)

replace the battery

4.
) What would happen if an extra battery cell is added?
a)
A)The lights will glow dim
b)
The wire will glow
c)
The lights will glow brighter
d)
None of the above
5.
A flow of electrons through a conductor is called:
a)
A river
b)
A spark
c)
An electron flow
d)
A current
6.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
7.

The unit to measure power

a)

watt

b)

ohm

c)

volt

d)

ampere

8.

The measure of electrical resistance

a)

watt

b)

ohm

c)

volt

d)

ampere

9.

The unit for electric current

a)

watt

b)

ohm

c)

volt

d)

ampere

10.
What does the switch do in a circuit?
a)
It supplies the power.
b)
It carries electricity.
c)
It opens and closes the circuit.
d)
It is an insulator.
11.

Sub atomic particles that have a negative charge

a)

protons

b)

neutrons

c)

electrons

d)

circuits

12.

Electric current is the flow of ______________________

a)

electrons

b)

protons

c)

neutrons

d)

atoms

13.

(Look at picture for question)

a)

A device that restricts or opposes the flow of electrons

b)

A device that allows easy flow of electrons

c)

A device that can be used as a battery

d)

A device that measures electric current

14.

A 1.5 volt battery will give 1 coulomb of charge how many joule(s) of energy?

a)

1.5 Joules of energy

b)

0.2 Joules of energy

c)

1 Joule of energy

d)

0 joule of energy

15.

What form of energy is stored in a battery?

a)

chemical energy

b)

gravitational potential energy

c)

kinetic energy

d)

thermal energy

16.

A circuit is connected in series with a 20 volt source. There are three resistors placed in the circuit. The resistances are 8 ohms, 10 ohms, and 4 ohms. What is the total power of the circuit?

a)

0.91 W

b)

18.18 W

c)

440 W

d)

8800 W

17.

A student makes the following claim about electron flow through a circuit that includes a battery and a bulb:

“The current through the circuit is called direct current because the electrons move from the negative side of the battery, through the circuit, to the positive side of the battery."

a)

The student is incorrect and is actually describing Alternating Current

b)

The student is incorrect because the electrons go from positive to negative

c)

The student is incorrect because electrons don't flow through the wire

d)

The student is correct

18.

A battery is wired to a single lightbulb in series. How can the current in the wire be described?

a)

The current goes into the lightbulb and uses all the current

b)

The current goes through the lightbulb and uses some of the current

c)

The current goes through the circuit and none is removed

19.

Two resistors are wired in parallel and have an equivalent resistance of 8 ohms. Which of the following could be the resistance of R1?

a)

8 ohm

b)

7 ohms

c)

5 ohms

d)

10 ohms

20.

A voltmeter should be wired in (a)  

21.

A voltmeter should be wired in ________ and a ammeter should be wired in _______

a)

series, parallel

b)

parallel, series

c)

series, series

d)

parallel, parallel

22.

Equivalent resistance of a circuit means ___________

a)

resistance of a single resistor

b)

all resistors have an equal resistance

c)

total resistance of the circuit

23.

Which appliance costs the most?

TV I=4A V=120V t=4.0 hrs

Vacuum I=6A V=120V t=0.10 hrs

Heater I=10A V=120V t=0.75 hrs

Gaming Console I=8A V=120V t=2.5 hrs

a)

TV

b)

Vacuum

c)

Heater

d)

Gaming Console

24.

A series circuit with two lightbulbs is attached to a 10 volt battery. Which of the following circuit elements should the student use to ensure the bulbs do not blow when too much current goes through the circuit?

a)

fuse

b)

switch

c)

resistor

25.

What is the total current in the circuit?

a)

2.08A

b)

0.96A

c)

11.53A

d)

9.8A

26.

Which way does charge flow in a circuit? ___________ to __________

a)

Positive, Negative

b)

Negative, Positive

c)

North, South

d)

East, West

27.

What is the formula for electric power?

a)

P=IVP = IV

b)

P=I2RP = I^2R

c)

P=V2RP = \frac{V^2}{R}

d)

All of the above are correct.

28.

Which circuit will have the brightest lightbulbs?

a)
Circuit with lightbulbs in series
b)
Circuit with lightbulbs in a mix of series and parallel
c)
Circuit with no lightbulbs connected
d)
Circuit with lightbulbs in parallel
29.

Which circuit continues to function after the removal of one of the resistors?

a)
Series circuit
b)
Open circuit
c)
Short circuit
d)
Parallel circuit
30.

  Use the diagram to answer the following question. What is the total Power of the circuit?   

a)

Total Power = 17.5 W

b)

Total Power = 30.0 W

c)

Total Power = 25.0 W

d)

Total Power = 14.4 W

31.

What is the interaction of electric charges that causes the flow of electrons from one place to another called?

a)

Static Electricity

b)

Electric Current

c)

Electricity

d)

Insulation

32.

Electricity travels at the speed of ______.

a)

Sound

b)

Light

c)

Water

d)

Wind

33.

Fill in the blank: A substance that allows electric current to pass through is called a ______.

a)

A) Insulator

b)

B) Conductor

c)

C) Resistor

d)

D) Capacitor

34.

Electricity is the interaction of electric charges and the flow of ______ from one place to another.

a)

protons

b)

neutrons

c)

electrons

d)

ions

35.

What is the property of protons and electrons that make up every atom?

a)

Mass

b)

Electric charge

c)

Volume

d)

Density

36.

Fill in the blank: Materials that do not allow electric current to flow through them easily are called ________.

a)

Conductors

b)

Insulators

c)

Semiconductors

d)

Resistors

37.

Which best briefly summarizes the law of electric charges?

a)

Charges always repel.

b)

Charges always attract.

c)

Charges that are opposite in nature attract; charges that are the same in nature repel.

d)

Charges that are opposite in nature repel; charges that are the same in nature attract.

38.

What is the buildup of electrical charges in one place called?

a)

Neutrons

b)

Static Electricity

c)

Insulator

d)

Conductor

39.

What unit is electric current measured in?

a)

Ω (Ohms)

b)

V (Volts)

c)

A (Amps)

d)

W (Watts)

40.

Which of the following would be the best example of a conductor?

a)

a. a tire

b)

b. a plastic spoon

c)

c. a log

d)

d. aluminum foil

41.

All wires used to carry electricity should be covered with _____.

a)

a. a colored material

b)

b. a conducting material

c)

c. an insulating material

d)

d. none of these.

42.

Which form of electric discharge appears in nature?

a)

sunlight

b)

thunder

c)

lightning

d)

northern lights

43.
You know that the object connected to the wires is a conductor because:
a)
The light bulb is glowing bright.
b)
It's a complete circuit.
c)
It's a closed circuit.
d)
The object is shiny.
44.

Why does a negatively-charged balloon stick to a neutral wall?

a)
The balloon sticks due to magnetic attraction.
b)
The wall is made of a special material that attracts balloons.
c)
The balloon releases heat that causes it to adhere to the wall.
d)

A negatively-charged balloon sticks to a neutral wall due to electrostatic induction. Electrons in the wall are pushed away, leaving behind protons, creating an attractive force.

45.
This image represents what type of circuit?
a)
open
b)
closed
c)
series
d)
parallel
46.
What kind of circuit is this?
a)
series
b)
parallel
47.
Why won’t the light bulb in the circuit pictured to the right light up?
a)
The wires from the second light bulb are not connected to the battery
b)
The wires are not connected between the light bulbs 
c)
The wires are not connected to both sides of the first light bulb
d)
The wires are too long to complete the circuit 
48.

Match the following

a)
1.

wire

b)
2.

light bulb

c)
3.

battery

d)
4.

switch

e)
5.

electric circuit

49.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
50.
In a parallel circuit if one of the light bulbs burns out the rest _________.
a)
stop the flow of electricity
b)
 can still light up
c)
 will go out
d)
of the light bulbs burn out also
51.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
52.
This instrument can be used to see if materials conduct electricity.  Which of these groups contains items that could all conduct electricity to complete the circuit?
a)
rubber ball, plastic comb, nail
b)
paper clip, penny, screw
c)
cork, dollar bill, tweezers
d)
pencil, eraser, spoon
53.

Why electrical wiring usually are covered with a layer of plastic?

a)

To make it look pretty

b)

To help electricity flow along the wire

c)

To make it safe

d)

To add more energy

54.

Why is a battery important in an electrical circuit?

a)

As a source of energy.

b)

As a path for electricity to flow through.

c)

As a connector to connect all parts of a circuit.

55.
Battery cells are connected in series to _______
a)
Increase voltage output
b)
Decrease voltage output
c)
Increase current capacity
d)
Decrease current capacity
56.

The force or push that causes electric charges to move is called ______.

a)

resistance

b)

voltage difference

c)

current

d)

static electricity

57.

Electric charges always flow from _____ areas to _____ areas.

a)

positive, negative

b)

negative, positive

c)

positive, neutral

d)

neutral, negative

58.

. A material through which electrons do NOT flow easily is a(n) _____.

a)

insulator

b)

fuse

c)

conductor

d)

circuit breaker

59.

Which of the following statements about electric charge is true?

a)

Objects must be touching on another to exert electrical force.

b)

Electrical forces act at a distance.

c)

Air cannot conduct electricity; it is conducted only by solid materials.

d)

Opposite electric charges always repel one another.

60.

Mr. Robinson and his class are conducting an experiment. The class needs to choose a good insulator. Which of the following could be used as an insulator?

a)

plastic plate

b)

silver spoon

c)

copper wire

d)

gold necklace

61.

Which of the following will increase the resistance of a wire?

a)

using a thicker/wider wire

b)

using a shorter wire

c)

increasing the temperature of the wire

d)

using silver instead of copper

62.

What is the current produced by a 9-volt battery flowing through a resistance of 0.2 ohms?

a)

1.8 amps

b)

45 amps

c)

0.022 amps

d)

8.8 amps

63.

Which two areas of physical science are closely related to the development of electric motors and generators?

a)

sound and light

b)

electricity and sound

c)

light and magnetism

d)

electricity and magnetism

64.

Which of the following will decrease the strength of the magnetic field around a wire?

a)

increasing the current flowing through the wire

b)

using less loops around the iron core

c)

flipping the direction of the current flowing through the wire

d)

using a larger iron core

65.

Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100 amps?

a)

1.98 V

b)

0.000198 V

c)

5,050 V

d)

100.0198 V

66.

This contains a piece of metal that melts if it gets too hot in order to open a circuit.

a)

conductor

b)

insulator

c)

fuse

d)

circuit breaker

67.

The function of a generator is to change ____.

a)

chemical energy to electrical energy

b)

electrical energy to chemical energy

c)

electrical energy to mechanical energy

d)

mechanical energy to electrical energy

68.

This exerts a force that causes other electric charges to move.

a)

electrical poles

b)

electrical fields

c)

insulators

d)

conductors

69.

Which circuit below contains the greatest voltage?

a)

A circuit with a current of 20 amps and a resistance of 16 ohms

b)

A circuit with a current of 10 amps and a resistance of 10 ohms

c)

A circuit with a current of 25 amps and a resistance of 16 ohms

d)

A circuit with a current of 20 amps and a resistance of 10 ohms

70.

What process is the method by which a neutral object obtains an electrical charge from a distance?

a)

convection

b)

conduction

c)

radiation

d)

induction

71.

The Law of Conservation of Charge states that _____.

a)

charge can be created and destroyed but NOT transferred.

b)

charge cannot be created and destroyed but it can be transferred.

c)

charge cannot be created and destroyed and it cannot be transferred.

d)

none of the above

72.

Alexandra was preparing to go on a hike in the woods. She gathered the equipment she would need and placed it on the kitchen counter. By chance, she placed her compass near an electrical outlet. Although the compass was not moving, the compass needle turned because ______.

a)

the electric current in the outlet produced a magnetic field

b)

the compass could only be used outdoors

c)

the kitchen counter was made of a magnetic substance

d)

the kitchen had a microwave oven

73.

In a closed circuit containing one resistor and a battery, if the voltage in the battery increases, the current going through the resistor increases. Why does this occur?

a)

As the electrons are sped up, they bunch closer together.

b)

As the electrons have more energy, they vibrate more rapidly.

c)

As the electrons are pushed more by the battery, they move faster through the circuit.

d)

As the distance around the circuit increases, the electrons take longer to travel around.

74.

Laser printers work with the use of heat and positive and negative charges. The laser etches a negative charge on spots of the printer drum in the form of text or images. The plastic ink dust is attracted to the places on the drum with this negative charge. What is the charge of the plastic ink dots themselves?

a)

electron

b)

negative

c)

neutral

d)

postive

75.

Match the following

a)

Protons

1.

Positively charged particles in an atom

b)

Electrons

2.

Negatively charged particles in an atom

c)

Neutrons

3.

Particles in the atom that have no charge

d)

Ferromegnetism

4.

When non-magnetic materials become attracted to magnets

e)

Electroscope

5.

A device that detects electric charge on an object

76.

Match the following

a)

Electromagnets

1.

Temporary magnet made by placing a piece of iron inside a current carrying coil of wire.

b)

Voltmeter

2.

A device that measures the voltage difference in a circuit

c)

Series Circuit

3.

Circuit that has only one pathway for current to travel through

d)

Parallel Circuit

4.

Circuit that has more than one pathway for current to travel through

77.
Magnetism is generated by moving
a)
protons.
b)
electrons.
c)
neutrons.
d)
elements.
78.
If you place the North pole of a magnet next to the South pole of another magnet, they will:
a)
Attract
b)
Repel
c)
Do nothing
d)
Shatter
79.
A paper clip is an example of a:
a)
magnetic material
b)
permanent magnet
c)
bar magnet
d)
insulator
80.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
81.
In un-magnetized materials the domains are __________ aligned.
a)
super
b)
slightly
c)
randomly
d)
always
82.
Electric motors are devices that convert _____ energy into  _____ energy.
a)
electrical; mechanical
b)
mechanical; electrical
c)
chemical; potential
d)
mechanical; kinetic
83.
Region around a magnet in which magnetic force can act.
a)
Magnetic field 
b)
Magnetic force
c)
Domain
d)
Perimeter
84.
Two south poles will...
a)
attract
b)
repel 
85.
Magnets that are arranged like this will _______. 
a)
move away from each other (repel)
b)
move towards each other (attract)
86.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles. 
d)
the middle.
87.
Iron and steel can become _____.
a)
magnetized
b)
transformed into plastics
c)
lined up to the poles
d)
part of the equator
88.
A simple electromagnet can be made with which of the following?
a)
an electric current
b)
a turbine and nail
c)
a nail, a wire, and a battery
d)
a compass and a battery
89.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
90.
Magnetism is generated by moving
a)
protons.
b)
electrons.
c)
neutrons.
d)
elements.
91.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
92.
If you place the North pole of a magnet next to the South pole of another magnet, they will:
a)
Attract
b)
Repel
c)
Do nothing
d)
Shatter
93.
A paper clip is an example of a:
a)
magnetic material
b)
permanent magnet
c)
bar magnet
d)
insulator
94.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
95.
In un-magnetized materials the domains are __________ aligned.
a)
super
b)
slightly
c)
randomly
d)
always
96.
Electric motors are devices that convert _____ energy into  _____ energy.
a)
electrical; mechanical
b)
mechanical; electrical
c)
chemical; potential
d)
mechanical; kinetic
97.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
98.
Region around a magnet in which magnetic force can act.
a)
Magnetic field 
b)
Magnetic force
c)
Domain
d)
Perimeter
99.
Iron and steel can become _____.
a)
magnetized
b)
transformed into plastics
c)
lined up to the poles
d)
part of the equator
100.
A simple electromagnet can be made with which of the following?
a)
an electric current
b)
a turbine and nail
c)
a nail, a wire, and a battery
d)
a compass and a battery

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