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WorksheetsUnit Review - Magnetism & Electricity
Total questions: 40
Worksheet time: 20mins
Can magnets interact without touching?
yes
no
The area of magnetic force around a magnet is known as its ____.
magnetic field
Magnetic fan lines
Magnetic area
Magnetic location
What will the magnets in the picture do?
attract
repel
attract and repel
neither attract nor repel
What will the magnets in the picture do?
attract
repel
attract and repel
neither attract nor repel
Permanent magnets are made out of which materials?
copper, chromium, and cobalt
copper, nickel, and iron
cobalt, nickel, and iron
gold, silver, and platinum
Magnetic fields are strongest...
at the south pole
at the north pole
at both poles
between the poles
Magnets are made of tiny sections of magnetic fields that are aligned to produce a larger magnetic field. These are called ___.
magnetic domains
electromagnets
magnetic fields
magnetic sections
A ____ is a device that has a magnetic needle that spins freely. It is used for navigation because its needle usually points north.
compass
GPS
calculator
map
The Earth's magnetic field is most useful for...
deflecting solar wind
making it look cool in front of the other planets
keeping track of time
creating sunny weather
Ancient people discovered magnetic rocks called lodestones. For what purpose did they use them?
starting fires
compasses
sculptures
magnetic weapons
Why does a compass needle point north?
because of magic
because north is up
the compass is programmed to do so
it lines up with earth's magnetic field
Paper clips are attracted to magnets because they contain ___.
iron
copper
aluminum
silver
Opposite charges ____ and like charges ____.
attract, repel
repel, attract
You have two magnets. One is in your hand and the other is sitting on a table. You move the SOUTH pole of your magnet near the SOUTH pole of the magnet on the table. What happens?
they attract
nothing
they repel
a chemical reaction
What are the magnets doing in the picture?
attracting
repelling
neither attracting nor repelling
both attracting and repelling
What are the magnets doing in the picture?
attracting
repelling
both attracting and repelling
neither attracting nor repelling
An atom is a positively charged nucleus that is orbited by negatively charged ___.
protons
electrons
neutrons
photons
When the atoms of a substance align their magnetic fields with each other, they are called _____.
ferromagnetic
a compass
a lodestone
anti-ferromagnetic
The ___ is Earth's magnetic field that protects us from the sun's harmful radiation and solar wind.
magnetosphere
hydrosphere
heliosphere
biosphere
A ___ is a material that allows heat and electricity to pass through it.
conductor
insulator
A ___ is a material that does NOT allow heat and electricity to pass through it.
conductor
insulator
What is the traditional color for North on a compass?
red
blue
white
black
What makes electromagnets different from regular magnets?
they use less energy
they do not pollute the environment
they are more user-friendly
they can be switched on and off
What device is shown?
solenoid
electromagnet
motor
generator
What happens when a compass is moved near a strong magnet?
it points toward the magnet
it points north
it doesn't move
it spins in circles
The right-hand rule says that if you hold a wire in your right hand and point your thumb in the direction of the ____ current, the direction your fingers curl is the direction of the magnetic field.
positive
negative
Does adding loops of wire to a solenoid increase or decrease its strength?
increase
decrease
both
neither
What device is shown?
electromagnet
solenoid
generator
motor
Which kind of circuit has only one path for electricity to flow?
series
parallel
Which kind of circuit has more than one path for electricity to flow?
series
parallel
Which type of circuit is shown?
series
parallel
Which type of circuit is shown?
series
parallel
If one bulb is not working in a SERIES circuit, will the other bulbs work?
yes
no
If one bulb is not working in a PARALLEL circuit, will the other bulbs work?
yes
no
When a current flows through a wire, it creates a ___ around the wire.
magnetic field
compass
attraction
magnetic pole
Which would NOT increase the strength of the magnetic field around a solenoid?
adding an iron core
adding more coils of wire
reversing its orientation
connecting it to a battery
Which three materials would allow you to build an electromagnet?
wire, nail, paper clip
battery, wire, nail
sandpaper, tape, wire
battery, tape, paper
All of the following would cause a series circuit to stop working except ___.
a closed switch
a burned out light bulb
an open switch
a cut wire
An electric current does NOT exist in ___ circuit.
an open
a closed
a series
a parallel
The picture shows a simple circuit with a battery source, a switch, and a light bulb. What would the light bulb do in this situation?
it would be on
it would be off
impossible to determine
it would be blinking on and off
