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Magnets and Circuits Review

Total questions: 80

Worksheet time: 2hrs 8mins

Name
Class
Date
1.
Which best describes a parallel circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from one source. 
c)
Electricity flows along more than one pathway. 
d)
The flow of electricity comes from more than one source. 
2.
What is one problem with using a series circuit? 
a)
It has a lot of series. 
b)
If one goes down, they all go down! 
c)
It doesn't work properly.
d)
There are no problems. 
3.
What is one benefits of using a parallel circuit?  
a)
It gets confusing.
b)
There are no problems.
c)
If one goes down, it does not affect the others. 
d)

It has parallel lines.

4.
What is a switch's function in a circuit?
a)
to make the current hotter or colder
b)
turn on and off the flow of current
c)
the pathway that current flows
d)
to add more power to the circuit
5.
Bits of paper are attracted to the surface of this balloon.  What attracts the paper pieces to the balloon?
a)
Friction
b)
Static Electricity
c)
Magnetism
d)
Potential Energy
6.
Will the light bulb in this circuit light and why/why not?
a)
yes, because it has two batteries
b)
no, because the switch is open
c)
yes, because it is in a circuit
d)
no, because the bulb is burned out
7.
Current is referred to as:
a)

flow of protons

b)
circuits
c)
flow of electrons
d)
batteries
8.
wood is a _____?
a)
conductor
b)
insulator
9.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles. 
d)
the middle.
10.
If you wrap more coils around an electromagnet, it will become...
a)
brighter
b)
stronger
c)
weaker
d)
invisible
11.
A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow? 
a)
The switch needs to be opened.
b)
The switch needs to be closed.
c)
The cell needs an insulator.
d)
The wire needs to be connected to the bottom of the cell.
12.
A conductor is a
a)
material that does not allow electrons to flow easily.
b)
material that allows electrons to flow easily.
c)
device the detects an electric charge.
d)
device the changes voltage.
13.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)

Positive

14.
Material that resist the flow of electricity or heat is an _______.
a)
electron
b)
insulator
c)
conductor
15.
Static electricity is an electric charge caused by friction that can build up on a material or surface. One example of static electricity is:
a)
solar power
b)
magnetism
c)
lightning
16.
Which of the following are conductors?
a)
air
b)
plastic straw
c)
copper wire
d)
wooden spoon
17.
Which of the following orientation would result in the greatest attraction between the two magnets?
a)
A
b)
B
c)
C
d)
D
18.
Which bulb will light?
a)
A
b)
B
c)
C
d)
D
19.
True or False: All metals stick to magnets.
a)
True
b)
False
20.
Magnetism is a type of ____________
a)
force
b)
book
c)
plant
d)
animal
21.
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
22.
Electricity is the flow of _________.
a)
Protons
b)
Neutrons
c)
Electrons
23.
Which one is a conductor? 
a)
wood 
b)
iron 
c)
plastic spoon 
d)
paper 
24.

This type of circuit has a broken path and charges cannot flow.

a)

open circuit

b)

closed circuit

25.

A device in which a current produces magnetism

a)

magnet

b)

electromagnet

c)

electric motor

d)

generator

26.

True/false: The size of the magnet doesn't affect its strength.

a)

true

b)

false

27.

Magnets not only pull things, but they can also push things away.

a)

True

b)

False

28.

The Earth is one big giant magnet.

a)

True

b)

False

29.

The space around a magnet is called its ____________.

a)

electrical field

b)

baseball field

c)

magnetic field

d)

soccer field

30.
What subatomic particle causes magnetism in an atom? 
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
31.
Bob made an electromagnet but it was very weak.  How can he make it stronger?
a)
take away a d-cell
b)
wrap the wire loosely
c)
use thicker wire
d)
use less winds
32.
Which metals are attracted to magnets? 
a)
iron, nickel, cobalt
b)
gold, silver, platinum
c)
copper, magnesium, aluminum
33.

Which is NOT a property of a magnet? 

a)
all magnets have two poles
b)
all magnets have a force of attraction or repulsion
c)
all magnets are surrounded by a magnetic field
d)
all magnets can be turned off
34.
This substance is
a)
magnetized
b)
unmagnetized
c)
positively charged
d)
negatively charged
35.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
nickel
36.
An electric current flows through a continuous loop known as a ____________.
a)
Circuit
b)
Field
c)
Domain
d)
Switch
37.

All matter consists of particles called

a)

Units

b)

Atoms

c)

Cubes

d)

Pints

38.

Atoms consist of parts called protons, neutrons, and

a)

Electrons

b)

Haptons

c)

Neptons

d)

Wontons

39.

Each protons has a _______________ electrical charge

a)

Positive

b)

Negative

c)

Neutral

d)

Shocking

40.

Each electron has a _________________ electrical charge

a)

Positive

b)

Negative

c)

Neutral

d)

Shocking

41.

Each neutron has an electrically_________________charge

a)

Positive

b)

Negative

c)

Neutral

d)

Shocking

42.

The nucleus of an atom contains protons and_______________

a)

Electrons

b)

Haptons

c)

Neutrons

d)

Wontons

43.

Electrons move around_________________the nucleus

a)

Inside

b)

Outside

c)

On top of

d)

Without

44.
The subatomic particles in green are...
a)
Protons
b)
Neutrons
c)
Electrons
45.
What number indicates the nucleus?
a)
1
b)
2
c)
3
d)
4
46.
Which of these is the proton.
a)
A
b)
B
c)
C
d)
None
47.

What particle is shown with the GREEN circles?

a)

Proton

b)

Neutron

c)

Electron

48.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
49.
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
50.
Two south poles will...
a)
attract
b)
repel 
51.

If two magnets are close together, the magnetic force will be ________.

a)

smelly

b)

weak

c)

strong

d)

positive

52.
What type of circuit is show in the image?
a)
Series Circuit
b)
Parallel Circuit
53.
What will happen if one light bulb is removed from this circuit?
a)
the other bulbs will go out
b)
the other bulbs will get dimmer
c)

the other bulbs will stay the same

d)
the battery will become stronger
54.
Which of the following answer choices correctly describes the image? 
a)
Series circuit - Bulbs are lit
b)
Series circuit - Bulbs are off
c)
Parallel circuit - Bulbs are lit
d)
Parallel circuit - Bulbs are off
55.

In a Closed Circuit ...

a)

The circuit is complete and electric energy flows through the circuit

b)

The circuit is not complete and electric energy flows through the circuit.

c)

The circuit is not compelte and no electric energy flows through the circuit.

d)

The circuit is compelte and no electric energy flows through the circuit.

56.

In a Open Circuit ...

a)

The circuit is compelte and no electric energy flows through the circuit.

b)

The circuit is complete and electric energy flows through the circuit.

c)

The circuit is not complete and no electric energy flows through the circuit.

d)

The circuit is not complete and electric energy flows through the circuit.

57.

When you connect a battery and a lighbulb using paper clips, the light bulb will ....

a)

Explode

b)

Light Up

c)

Run away

d)

Turn Off

58.
Which of the following are conductors?
a)
air
b)
plastic straw
c)
copper wire
d)
wooden spoon
59.
Which of the following is an insulator
a)
water
b)
iron nail
c)
a piece of plastic
d)
a metal spoon
60.
What essential part of an electric circuit is missing in this picture where the "X" is?
a)
on/off switch
b)
source of energy (electric current)
c)
wires
d)
electrical device
61.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles. 
d)
the middle.
62.
What type of circuit is this?
a)
Parallel Circuit
b)
Series Circuit 
c)
Open Circuit 
d)
Transverse Circuit
63.
What kind of circuit is this?
a)
series
b)
parallel
64.
Which of these correctly shows what happens when two magnets are placed side by side?
a)
A
b)
B
c)
C
d)
D
65.
water is a______?
a)
conductor
b)
insulator
66.
this circuit is .....?
a)
open
b)
parallel
c)
closed
d)
The cutest little circuit evah!
67.
Atoms have different parts such as...
a)
protons, neutrons, and atoms
b)
neutrons, electricity, and atoms
c)
protons, neutrons, and electrons
d)
electrons, electricity, and elements
68.
When an object gains a lot of electrons it is said to have static electricity.
a)
True
b)
False
69.
Closed circuits cause electricity to flow.
a)
True
b)
False
70.
How many paths can electricity flow in a SERIES circuit?
a)
1
b)
2
c)
2 or more
71.

What will make the strength of an electromagnet stronger?

a)

A larger battery

b)

Wrap more coils around the nail.

c)

Use a smaller battery

d)

Detach the wire.

72.

Which part of the electromagnets turned into a magnet when electricity flows through a coiled wire?

a)

Battery

b)

Copper wire

c)

Iron Nail

d)

Bulb

73.

What type of magnet that can turned on and off?

a)

electromagnet

b)

permanent magnet

c)

electricity

d)

battery

74.
B and C are found in the ______ of an atom.
a)
Energy levels
b)
Space
c)
Nucleus
d)
Outside
75.

The smallest unit of an element that maintains the properties of that element is known as--

a)

a proton

b)

a neutron

c)

an element

d)

an atom

76.

An atom's central region, which is made up of protons and neutrons is called--

a)

Electron Cloud

b)

Nucleolus

c)

Nucleus

d)

Atomic Number

77.
In a Series circuit the more lightbulbs you add the brighter they get 
a)
False 
b)
True 
78.
Which best describes a simple series circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from the switch.
c)
Electricity flows along many pathways.
d)
The flow of electricity comes from the light bulb.
79.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
80.

What type of energy occurs when a sock is stuck to a blanket when it is taken out of the dryer?

a)

current electricity

b)

static electricity

c)

heat energy

d)

high voltage electricity

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