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Worksheetsmagnetic and electrical forces
Total questions: 85
Worksheet time: 2hrs 12mins
How do you increase the strength of electromagnets? 2 answers
Decrease the number of loops of wire
Increase the number of loops of wire
Increase voltage or current
Decrease voltage or current
There are (a) poles.
Which object will a magnet attract?
True or False: Magnets can pull objects through solids and liquids.
True
False
Which item would be attracted to a magnet?
a glass jar
a paperclip
a plastic toy cow
a wooden popsicle stick
Electric charge is made up of:
Protons and Neutrons
Electric Power
Electrons and Protons
Protons and Electric
What direction does the magnetic needle of a compass point to?
north pole
Santa's Workshop
magnetic south
magnetic north
What is the space around a magnet where the force is present?
Magnetic pole
Magnetic field
Magnetic needle
Which statement about magnetic poles is accurate?
Same magnetic poles attract, while different magnetic poles repel.
Same magnetic poles attract, while different magnetic poles attract.
Opposite magnetic poles attract, while like magnetic poles repel.
Opposite magnetic poles repel, while like magnetic poles attract.
Which is FALSE about magnets?
Magnets can attract or repel.
Round magnets have only one pole.
Magnets attract objects made of iron.
Magnets can pull through solids and liquids.
Magnetism is a
force.
power.
form of energy.
form of electricity.
What are the two poles on a magnet?
north and south
east and west
north and west
south and east
Is this magnetic?
No
Yes
Electric forces create electric charges.
True
False
What happens when the OPPOSITE poles of two magnets come near each other?
The magnets push away.
The magnets pull together.
The magnets get bigger.
The magnets disappear.
The space around a magnet where its force acts is called the:
attract zone
repel zone
magnetic field
Sarah is looking for a way to move her boat across the water without touching it directly. She included paperclips in the boat design so that the magnetic attraction between the paperclip and the magnet would pull the boat along the water's surface. Which statement is an accurate representation of what is happening with Sarah's boat?
The attraction between the boat and the magnet pulls the boat toward the magnet.
As Sarah gets further from the boat with her magnet, the attraction will decrease.
The attraction between the boat and the magnet pushes the boat away from the magnet.
The more paperclips that are attached to the boat, the stronger the force of attraction to the magnet.
How is an electromagnet different from a bar magnet?
Bar magnets have a north and south pole, but electromagnets do not.
Electromagnets are strong, permanent magnets, but bar magnets are always weaker.
Electromagnets are only magnetized when a current flows through a wire wrapped around the core.
Bar magnets are attracted to ferromagnetic substances such as iron. Electromagnets are attracted to all metals.
Match the key terms with their definitions.
Attract
to pull objects toward one another
Repel
to push objects away from each other
Magnetic field
the space around a magnet in which magnetic force can act on objects
Magnetic pole
one of the two opposite ends of a magnet
Magnetic field line
a line that connects opposite magnetic poles and represents the strength of the magnetic field
What is defined as a push or a pull?
motion
force
speed
vector
(a) is the space around a magnet in which magnetic forces can act on an object.
magnetic field
magnet
repelling
attracting
When two magnets are attracting, the magnetic field lines are (a)
connecting
not connecting
half-connecting
neutrons
protons
electrons
none of these
friction
induction
contact
static electricity
A balloon has a negative charge. The glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?
The balloon will be attracted to the rod
The balloon will be repelled by the rod
The balloon will remain in place
The balloon will spin in circles
What is the difference between a conductor and an insulator?
An insulator allows electricity to flow through it easily and a conductor does not.
A conductor allows electricity to flow through it easily and an insulator does not.
An insulator is magnetic and a conductor is not.
A conductor is magnetic and an insulator is not.
The electrical wires in many homes are made of copper and covered with plastic. Why are copper and plastic good choices for electrical wires?
Copper is a conductor of electricity, and plastic is an insulator of electricity.
Copper is an insulator of electricity, and plastic is a conductor of electricity.
Copper is a conductor of electricity, and plastic is an insulator of heat.
Copper is an insulator of electricity, and plastic is a conductor of heat.
Which of these circuits will not allow the lightbulb to light up
In which of the following materials do charges flow more easily?
glass
wool
metal wires
rubber mats
Which of the following statements describes the interaction between magnetic poles?
Like poles attract each other.
Like poles repel each other, and opposite poles attract each other.
Opposite poles repel each other.
Like poles attract each other, and opposite poles repel each other.
Which electromagnet is stronger?
A
B
Which electromagnet is stronger?
A
B
Clothes clinging together, lightning, and a balloon clinging to a cat are examples of _____.
current electricity
circuit electricity
alternating electricity
static electricity
A device that converts chemical energy to electrical energy
switch
light
battery
bulb
The flow of charged particles from one point to another
electrical current
transformation
flow
voltage
The switch does what in the circuit?
Has potential energy to run the circuit
Becomes a temporary magnet
Controls the flow of electricity
Provides the pathway to carry the electricity
The battery does what in a circuit?
Controls the flow of electricity
Becomes a temporary magnet
Has potential energy to run the circuit
Provides the pathway for the electricity
C-The wire does what in the circuit?
Has potential energy to run the circuit
Becomes a temporary magnet
Controls the flow of electricity
Provides the pathway to carry the electricity
Which circuit will light the bulb?
A
B
C
D
Why did the compass needle change position when the circuit was closed?
Electricity also runs through the compass.
A magnetic field surrounds a wire.
The compass-needle change indicates the potential energy.
The magnetic poles of the D-cell reversed.
An electromagnet is...
Metal that becomes a permanent magnet with electricity
Metal that becomes a temporary magnet with electricity
The best modifications to an electromagnet are...
Add batteries, fewer winds
Add batteries, more winds
Add batteries, fewer winds, & thicker wire
Add batteries, more winds, & thicker wire
What do we call a device that converts electricity into mechanical movement?
electric charge
electric motor
electric current
electric plasma
chemical; mechanical
mechanical; electrical
electrical; mechanical
potential; kinetic
Electric motors are devices that convert _____ energy into _____ energy.
electrical; mechanical
mechanical; electrical
chemical; potential
mechanical; kinetic
What is ingredient C?
Water
Spinning Motion
Magnet
Copper Wire
What is ingredient A?
Water
Spinning Motion
Magnet
Copper Wire
What is ingredient B?
Water
Spinning Motion
Magnet
Copper Wire
What is this device called?
Magnet
Generator
Copper Wire
Steam
What did Ben Franklin prove?
Thunder is loud
People are smart
Lightning is electricity
Keys are important in everyday life
What’s the most important function of Earth’s magnetic field?
Earth's magnetic shield deflects asteroids and meteors
Earth's magnetic shield keeps energy from escaping into space
Earth's magnetic shield deflects most of the solar wind
Earth's magnetic shield helps birds and other animals navigate
Where is Earth's magnetic field strongest?
Along the outside lines
Along the inside lines on either side
Where the lines are close together at the poles
In the space outside of the lines
Earth is like a giant magnet due to....
its solid iron core spinning in the liquid iron outer core creates a magnetic field
the wind patterns of Coriolis Effect
the alignment of the continents
solar particles moving through the atmosphere
Which of the follow animals have cells containing metal that act like a compass? check all that do
bees
sea turtles
birds
whales
Why are the Lights only visible in the North and South poles?
the Sun only shines there
the Earth's magnetic field is strongest there, pulling the lights closer to both ends of the planet.
the wind carries the lights there from around the world
there are holes in the sky only in the furthest places north and south
Which of these characters are from the movie Ghostbusters? Can be one or more than one...
What is the name of this character?
Jason Voorhees
Michael Myers
Jack Skellington
Freddy Krueger
What are the names of these three characters?
Mary, Winifred, and Sarah
Sully, Mike, and Boo
Elise, Casey, and Tonia
The Puritans are said to have been the first to associate what type of black-colored animals with bad luck?
Dog
Cat
Rabbit
Squirrel
Spiders have 8 legs. What else do they have 8 of?
mouths
hands
eyes
ears
Every Halloween, Charlie Brown and Linus wait for this to appear
The Great Pumpkin
The Silly Bat
Snoopy
What monster was created as a science experiment?
Dracula
The Wicked Witch
Frankenstein
What is the shape of a magnetic field around the Earth?
The area of magnetic force around a magnet is known as its _____________.
magnetic field
magnetic declination
magnetic fan lines
magnetic tan lines
The planet earth is a giant magnet.
True
False
Mark the correct sentences
The magnetosphere extends all around the Earth and into the atmosphere around it
The centre of the Earth is made of rock
The North pole is the South pole of the Earth's magnetosphere
What is the role of the copper wire in this motor?
It carries the flow of electrons.
It powers the motor.
It creates a magnetic field.
It makes it look nice.
These objects would...
Attract
Repel
No reaction
What type of magnet that can turned on and off?
electromagnet
permanent magnet
electricity
battery
A circuit is...
A way of routing electricity along a path
When you measure how much an item weighs
When electrons move from one place to another you get...
a solid to a liquid
electricity
evaporation
A conductor is any material that
can be measured
allows electrons to move through it easily
resists the motion of electrons
Insulators are a material that electrons have a hard time flowing through
True
False
How does a SWITCH work?
The switch increases the amount of electrons flowing in the wires.
The switch makes the electrons in a wire move faster.
The switch opens or closes the circuit.
