WorksheetsChapter 13 Electricity and Magnetism
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
How can the strength of an electromagnet be increased?
a)
by using more turns in the metal coil
b)
by using a smaller magnet
c)
by using less current
d)
by using a smaller magnetic core
2.
Which of the following would be a good conductor for a closed circuit?
a)
plastic
b)
rubber
c)
copper
d)
wood
3.
What causes static electricity?
a)
only an object gaining electrons
b)
only an object losing electrons
c)
when positive and negative charges no longer balance
d)
when positive and negative charges balance
4.
A material that conducts electric current poorly or not at all is called...
a)
an insulator
b)
a conductor
c)
a circuit
d)
a charge
5.
What is produced when a coiled wire is spun around a magnet?
a)
magnetic energy
b)
mechanical energy
c)
geothermal energy
d)
electrical energy
6.
A negatively charged object _________________ a positively charged object.
a)
repels
b)
attracts
c)
conducts
d)
insulates
7.
Where is a magnetic field the strongest?
a)
at the north-seeking pole
b)
at the south-seeking pole
c)
in the middle
d)
at both poles
8.
What would happen to the other light bulbs in a series circuit if one light bulb burns out?
a)
The other light bulbs will be dimmer
b)
The other light bulbs will go out.
c)
The other light bulbs will remain on,
d)
The other light bulbs will be brighter.
9.
What would happen to the other light bulbs in a parallel circuit if one light bulb burns out?
a)
The other light bulbs will remain on.
b)
The other light bulbs will be brighter.
c)
The other light bulbs will be dimmer.
d)
The other light bulbs will go out.
10.
What did Michael Faraday do when he discovered that changing a magnetic field created an electric current in a wire?
a)
He told no one of his investigation.
b)
He did not think he had discovered anything.
c)
He shared his investigation with other scientists.
d)
He told only Joseph Henry about his investigation.
11.
Why does a compass needle point in a north-south direction?
a)
The needle forms an electromagnet with Earth's poles.
b)
The needle is lightweight, so it always spins to the south.
c)
The needle is pulled in the middle by Earth's equator.
d)
The needle reacts to Earth's magnetic poles.
12.
In a doorbell, electromagnets help convert ____________ to _______________to ____________.
a)
mechanical energy, magnetic energy, electric energy
b)
magnetic energy, electric energy, mechanical energy
c)
electric energy, magnetic energy, mechanical energy
d)
electric energy, mechanical energy, magnetic energy
13.
Before lightning strikes, negative particles gather near the bottom of the clouds and _______________ particles cluster near the top.
a)
negative
b)
neutral
c)
electron
d)
positive
14.
Electric current moves quickly through ____________ .
a)
insulators
b)
conductors
c)
plastic
d)
wood
15.
Modern homes use electricity that is arranged in what kind of circuits?
a)
magnetic
b)
parallel
c)
series
d)
mechanical
16.
A generator uses ___________________ to turn mechanical energy into electrical energy.
a)
magnets and batteries
b)
magnets and nails
c)
wires and batteries
d)
wires and magnets
17.
The largest magnet in the word is ______________ .
a)
a doughnut magnet
b)
an electromagnet
c)
a bar magnet
d)
the Earth
18.
Static electricity is the transfer of ________________.
a)
neutrons
b)
electrons
c)
protons
d)
molecules
19.
Why are schools wired with parallel circuits?
a)
If one receiver goes out all receivers do not go out.
b)
They are cheaper to install.
c)
The wires connect easier to many rooms.
d)
If one receiver goes out they all go out.
20.
The flow of electricity is called ____________.
a)
electron
b)
movement
c)
current
d)
conductor
21.
A parallel circuit has ________ paths for the electricity to flow.
a)
0
b)
1
c)
2
d)
2 or more
22.
A complete loop of electricity is called a ___________.
a)
circuit
b)
current
c)
carrier
d)
circle
23.
Alike poles ______________.
a)
react
b)
jump
c)
repel
d)
attract
24.
Which of these would be the best insulator of electricity?
a)
copper wire
b)
magnet
c)
silver wire
d)
rubber
25.
What happens to a magnet's poles if a magnet is broken into two parts?
a)
You have 2 magnets, each no longer has a north or south-seeking pole.
b)
You have 2 magnets , one with a north-seeking pole and one with a south-seeking pole.
c)
You have 2 magnets each with its own north-seeking and south-seeking pole.
d)
You can't break a magnet into two parts.
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