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Unit 1 Review: Electricity and Magnetism

Total questions: 30

Worksheet time: 34mins

Name
Class
Date
1.
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
2.

Which of the following are characteristics of series circuits?

a)

The circuits has only a lightbulb and wires.

b)

If one light in a circuit goes out, the remaining

lightbulbs will not work.

c)

Houses are wired on series circuits.

d)

The circuit has only one path for the

electrons to flow.

e)

The circuit will continue to work if one lightbulb

goes out.

3.

Which of the following are conductors?

a)
b)
c)
d)
e)
4.

What kind of circuit is this?

a)

Series

b)

Parallel

c)

Open

5.

What kind of circuit is this?

a)

Open parallel circuit

b)

Closed parallel circuit

c)

Open series circuit

d)

Closed series circuit

6.

What would happen if another lightbulb was added to this circuit?

a)

They would all remain lit, but would be brighter.

b)

They would all remain lit, but would be dimmer.

c)

They would all go out.

d)

They would all remain lit and their brightness would not change.

7.

Any object that allows electricity to flow through it easily is called a–

a)

Conductor

b)

Insulator

c)

Insulator

d)

Choreographer

8.

Indicate all of the following that would improve this electromagnet.

a)

Decrease battery voltage.

b)

Use a bigger nail.

c)

Increase battery voltage.

d)

Wrap the wire more times around the nail.

e)

Use a smaller nail.

9.

A compass is an instrument that is used in navigation due to its property of pointing in what direction?

a)

West

b)

East

c)

South

d)

North

10.

The shown experiment creates —

a)

current electricity and a magnetic screw

b)

a conductor and a motor

c)

static electricity and an insulator screw

d)

resistance and a generator

11.

What would happen to the magnetism of the screw when the electric current is lost?

a)

The screw would become a stronger magnet.

b)

The screw would become a weaker magnet.

c)

The screw would hold the same magnetic charge.

d)

The screw would no longer be magnetic.

12.

A student needs to put insulator tubing around the wires that run from the rotating loop to the light bulb. What type of material should the student use for insulator tubing?

a)

Rubber

b)

Copper

c)

Aluminum

d)

Silver

13.
Magnetism created by an electric current
a)
electricity
b)
electromagnetism
c)
wind energy
14.
A continuous flow of electricity is called_____________
a)
series
b)
circuit
c)
static
d)
current
15.
What is the value on the balance?
a)
73 g
b)
373.34 g
c)
300 g
d)
703 g
16.
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
17.
A compass needle responds to a magnetic field, because the compass needle is a
a)
A. generator.
b)
B. motor.   
c)
C. magnet.
d)
D. transformer.
18.
The dependent variable in this experiment is - 
a)
Number of Bacteria
b)
Time of Incubation
c)
Culture Number
d)
Type of Bacteria
19.
Electricity is the flow of _________.
a)
protons
b)
neutrons
c)
electrons
20.
Current is...
a)
moving protons
b)
moving electrons
c)
measured in volts
d)
measured in ohms
21.
Resistance is...
a)
What "slows down" electrons
b)
What "speeds up" electrons
c)
Moving electrons
d)
What "pushes" electrons
22.

What part of the atom makes both current and static electricity?

a)

proton

b)

electron

c)

neutron

23.

An example of static electricity is

a)
b)
c)
24.

What will happen if bulb B is removed?

a)

Bulbs A and C will dim

b)

The circuit will be over

c)

All of the bulbs will go out

d)

The other bulbs will remain lit

25.

A buildup of electric charges on an object is known as

a)

Electron Clouds

b)

Static Electricity

c)

Resistance

d)

I do not know and do not wish to guess.

26.
As the resistance of a circuit increases, the current will...
a)
increase
b)
decrease
c)
stay the same
27.

When a circuit is closed, the load is _____________?

a)

On

b)

Off

28.
Which bulb will light?
a)
A
b)
B
c)
C
d)
D
29.
Which of the illustrations shows a circuit in which the light will actually come on?
a)
A
b)
B
c)
C
d)
D
30.
Does this represent attraction or repulsion?
a)
attraction
b)
repulstion