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Electricity and Magnet Review

Total questions: 42

Worksheet time: 1hrs 3mins

Name
Class
Date
1.
__________is an imbalance of electric charges within or on the surface of a material that builds up.
a)
static electricity
b)
current electricity
c)
circuits
d)
load
2.
A pathway for electricity to travel is called___________
a)
current
b)
static electrcity
c)
circuit
d)
circle
3.
A continuous flow of electricity is called_____________
a)
series
b)
circuit
c)
static
d)
current
4.
What kind of circuit is this?
a)
series
b)
parallel
5.
In a parallel circuit if one light bulb goes OUT; then they ALL go out. TRUE OR FALSE?
a)
TRUE
b)
FALSE
6.
What is this?
a)
magnet
b)
electromagnet
c)
series circuit
d)
parallel circuit
7.
How do you make an electromagnet stronger?
a)
Add a motor and/or lightbulbs
b)
Add more light bulbs and/or wire coils
c)
add more wire coils and/or a switch
d)
add more wire coils and/or batteries
8.
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
9.
When socks get stuck to towels in your dryer, this is an example of________________
a)
current electricity
b)
static electricity
10.

What are materials such as plastic and rubber called?

a)

Insulators

b)

Ohm's

c)

Conductors

d)

Electric

Circuits

11.

The lightbulb is off and the electrons are not flowing.

This is an example of what type of circuit?

a)

Open

circuit

b)

Closed

circuit

12.

The light bulb is lit and the electrons are flowing. This is an example of what type of circuit?

a)

Open

circuit

b)

Closed

circuit

13.

Magnetics have only 1 pole.

a)

True

b)

False

14.

Copper and aluminum are examples of _________?

a)

Ohm's

b)

Insulators

c)

Circuits

d)

Conductors

15.

Which of the following is an example of an insulator?

a)

Metal

b)

Copper

c)

Plastic

d)

Aluminum

16.

What are the two types of electric charges?

a)

North

and

South

b)

North

and

Positive

c)

Positive

and

Negative

17.

What happens when batteries are stacked up?

a)

They make higher voltages.

b)

They make lower voltages.

c)

Nothing happens.

18.

Magnetic forces get _______ with distance.

a)

weaker

b)

stronger

c)

equal

19.

Magnets can _______ or _______ each other.

a)

repel

or

push away

b)

attract

or

repel

c)

attract

or

pull towards

20.

Opposites _______________

a)

repel

b)

do nothing

c)

attract

21.

The opposition to electron movement

a)

Voltage

b)

Static electricity

c)

current

d)

Resistance

22.

If the top bulb goes out,

a)

All the bulbs go out

b)

The other bulbs get dimmer

c)

There is no effect on the other bulbs

d)

The other bulbs get brighter

23.

If the middle bulb goes out, _______

a)

The other bulb gets brighter

b)

The other bulb goes out

c)

The other bulb's brightness stays the same

d)

The other bulb gets dimmer

24.

Electrons flow only in

a)

series ciruits

b)

parallel circuits

c)

closed circuits

d)

open circuits

25.

What can you do to make an electromagnet stronger?

a)

wrap the coil more times

b)

wrap the coil more closely together

c)

use a stronger battery

d)

all of the above

26.

The following are four different arrangements of bar magnet pairs on a table near each other. Which arrangement of a pair of bar magnets on the left will attract each other? (pick 2)

a)

Option 1

b)

Option 2

c)

Option 3

d)

Option 4

27.
The figure shows an iron nail with a coil of wires around it. The wires are connected to a battery. The rod has a magnet around it. What will happen to the nail when current flows through the wire?
a)
The iron nail will quickly melt.
b)
The iron nail will spin.
c)
The nail and wires will become a magnet.
d)
Nothing will happen to the nail.
28.
As long as an electric current flows through a coil of wire, a magnetic field exists around the coil. What happens to the magnetic field when the electric current suddenly turns off?
a)
The magnetic field gradually gets stronger
b)
The magnetic field reverses direction
c)
The magnetic field stays the same because the coil becomes magnetized
d)
The magnetic field suddenly disappears
29.
Choose the following statement that best finishes the statement "A generator..."
a)
Creates mechanical energy from electrical energy.
b)
Creates chemical energy from mechanical energy.
c)
transforms mechanical energy into electrical energy.
d)
transforms electrical energy into mechanical energy.
30.

A ____ circuit has more than one path available for electrons to flow through, so if one portion of the circuit is not functioning, the whole circuit does not shut down

a)

series

b)

parallel

c)

incomplete

d)

complete

31.

A ____ circuit has only one path for electrons to flow and therefore, when one portion of the circuit is disrupted, the whole circuit shuts down.

a)

series

b)

complete

c)

incomplete

d)

parallel

32.

Area around a magnet in which magnetic forces can act

a)

magnetic field

b)

magnets

c)

magnetic pole

33.

What supplies energy in an electric

circuit?

a)

conductor

b)

light bulb

c)

battery

34.
Circuits often include a _____________ to control the flow of current.
a)
switch
b)
conductor
c)
voltage
d)
current
35.
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
36.
water is a______?
a)
conductor
b)
insulator
37.

A device that increases or deceases voltage, which often consists of two separate coils of insulated wire wrapped around an iron core.

a)

transformer

b)

galvanometer

c)

generator

d)

solenoid

38.

A device that transforms mechanical energy into electrical energy

a)

generator

b)

transformer

c)

magnet

d)

electron

39.

The region around a magnet where the magnetic force is exerted

a)

magnetic field

b)

electric field

c)

magnetic pole

d)

electric force

40.

Any material that attracts iron and materials that contain iron

a)

magnet

b)

electron

c)

solenoid

d)

transformer

41.

A tiny particle that moves around the outside of the nucleus of an atom

a)

electron

b)

neutron

c)

proton

d)

axon

42.

A(n) _______is a device used to increase or decrease the voltage of an electricity supply. They are designed to be as efficient as possible (up to 99.9% efficient). 


a)

transformer

b)

transmitter

c)

windmill

d)

firestation

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