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Electricity And Magnetism
Test Description: Review the terms and concepts we have learned about electricity and magnetism.
Instructions: Answer all questions to get your test result.
1) Isabel makes an open circuit using a battery, a bulb, and wires. She leaves the ends of the two wires free . If she tests a needle for conduction by touching it with the ends of the free wires, what will happen?
A
The needle will shock you.
B
The light will not turn on.
C
The needle will become hot.
D
The light will turn on.
2) Is graphite a conductor or an insulator?
A
conductor
B
insulator
3) In a circuit, the wire is responsible for ___________________.
A
hindering electricity
B
generating electricity
C
conducting electricity
D
using electricity
4) Is copper an insulator or conductor?
A
insulator
B
conductor
5) Is plastic an insulator or a conductor?
A
insulator
B
conductor
6) Which list includes only insulators?
A
aluminum, fiberglass, plastic, wool
B
gold, silver, copper, nickel
C
plastic, feathers, wood, water
D
wool, plastic, feathers, fiberglass
7) Which list only contains conductors?
A
steel, water, aluminum
B
wood, water, wool
C
wood, wool, plastic
D
steel, gold, plastic
8) What is the purpose of the battery in a circuit?
A
uses electricity
B
hinders electricity
C
conducts electricity
D
generates electricity
9) Which of these describes a complete circuit?
A
wire connected to the side of a battery; connected to a load; connected back to the side of a battery
B
wire connected to the positive end of a battery, connected to a load; connected back to the positive end of a battery
C
wire connected to the positive end of a battery; connected to a load; connected to the negative end of a battery
D
wire connected to the negative end of a battery; connected to a load; connected back to a negative end of a battery
10) What is a switch responsible for in a circuit?
A
generating electricity
B
using electricity
C
controlling the flow of electricity
D
conducting electricity
11) Ms. Jones science class is studying whether materials conduct electricity or not. Which experiment would help them learn if an object conducts electricity?
A
a simple circuit with a power source and a load
B
a simple switch with a pencil and a load
C
a parallel circuit with two switches and two loads
D
a simple circuit with a switch and a load
12) Static electricity is an example of ________________.
A
alternating electricity
B
naturally occuring electricity
C
human harnessed electricity
D
current electricity
13) ____________ is the buildup of excess charge caused by the gain or loss of electrons.
A
static electricity
B
alternating current
C
direct current
D
current electricity
14) Magnets and electromagnets both have _____________________.
A
electricity
B
currents
C
poles
D
power source
15) Which statement is true?
A
The south pole of one magnet will attract the south pole of another magnet.
B
The south pole of one magnet will repel the north pole of another magnet.
C
The north pole of one magnet will attract the south pole of another magnet.
D
Magnets do not have poles.
16) Which statement is NOT true about electromagnets?
A
Electromagnets can be turned on or off.
B
Electromagnets are permanent magnets.
C
Electromagnets can be used in motors.
D
Magnetism is caused by electrons.
17) Which statement is NOT true about bar magnets?
A
These are temporary magnets.
B
These have north and south poles
C
These require electricity to work.
D
These attract and repel.
18) Which is a reason you might not use an electromagnet?
A
You can shut it on and off.
B
It is a strong magnet.
C
It can be used all the time.
D
You need electricity for it to work.
19) Which is NOT a reason to use a permanent magnet?
A
There are no moving parts.
B
It has constant strength.
C
You have to recharge it.
D
You don't need electricity.
*select an answer for all questions
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