WorksheetsUnit 5 - Mrs. Gilmer
Total questions: 26
Worksheet time: 18mins
ALL metals are pulled by magnets.
True
False
Opposites ________, like sides _______.
Repel, Attract
Attract, Repel
Attract, do nothing
Do nothing, Repel
When both magnets are pushing, the two are ____.
opposite
attracted
no longer magnets
repelled
When both magnets are both pulling, the two are ____.
opposite
attracted
no longer magnets
repelled
In a system with two magnets, how can we get them to switch the type of force they are producing (attractive vs. repulsive)?
By flipping both sides of the magnets
By flipping only one of the magnets
By adding a third magnet
None of the above
When the connected coil or magnet move, they have ____ energy.
potential
no energy
When a coil of wire is connected to a sound source, the speaker cone vibrates to produce sound, but only when a _____ is brought very near to the copper wire.
coil of wire
battery
paperclip
magnet
A permanent magnet can NOT be turned on and off.
True
False
What type of magnet can be turned on and off?
Permanent magnet
Temporary magnet
all magnets
no type of magnet can be turned on an off
An electromagnet is a _____ magnet. (battery involved)
Permanent
Temporary
Strong
Weak
If there IS NO permanent magnet in an object, what will happen if I put a paperclip near the object?
I will feel a stronger force the farther away I move the paperclip
I will not feel a force pulling it the closer the paperclip gets
I will feel a stronger force the closer I move the paperclip
I will sometimes feel a pull and sometimes feel a push
Select TWO:
If there IS a permanent magnet in an object, what might occur?
I will feel the force pulling it more as I move a paperclip toward the object.
I will feel a pull force when I get near the object no matter which way I flip the magnet.
When I put a magnet near the object, I would feel a push force if I turned the magnet around.
I will not feel a force pulling if I put a paperclip near the object
When we connect a battery and magnet together, we create a _________.
Electromagnet
Force
Permanent magnet
None of the above
How are poles involved in attraction?
When magnets attract, the same pole is towards each other and they move away from each other
When magnets attract, the same pole is towards each other and they move towards each other.
When magnets attract, the opposite poles are toward each other and they move toward each other.
When magnets attract, it does not matter which way they are facing
How are poles involved in repulsion (repelling)?
When magnets repel, the same poles are towards each other and they move towards each other.
When magnets repel, the opposite poles are towards each other and they move toward each other.
When magnets repel, the same poles are towards each other and they move away from each other.
When magnets repel, it does not matter which poles are facing each other.
A student wanted to create an _________. So she connected a battery to a coil of wire and a magnet.
static electricity
magnetic field
One that retains its magnetic properties for a LONG period of time. It creates its own persistent magnetic field.
System
Permanent magnet
Temporary magnet
Magnets can not create their own magnetic field
Those that act like a permanent magnet when they are within a strong magnetic field.
System
Permanent magnet
Temporary magnet
None of the above
A magnet that can be turned off and on.
Magnets can NOT be turned off and on
Permanent magnet
Temporary Magnet
All types of magnets can be turned off and on.
What is the independent, dependent, & controlled variable?
A student wanted to investigate using a homemade speaker system to see if it was a permanent magnet or not. The student used a paperclip and a magnet and held them both up one at a time to the speaker to see if they felt a force or not.
IV: The force felt
DV: speaker
CV: magnet
IV: speaker
DV: magnet/paperclip
CV: the student
IV: Paperclip/ magnet
DV: the force felt
CV: permanent magnet
IV: Paperclip/ magnet
DV: The force felt
CV: Speaker
What makes a magnet an electromagnet?
It can be turned on and off
It stays on forever with no switch needed
It is stronger than a permanent magnet
It is stronger than a temporary magnet
Choose a ways to make an electromagnet stronger.
add paperclips
increase the number of wire coils
change the length of the wire
get a smaller battery
What could happen if Mrs. Gilmer unhooked one side of the wire from the battery in an electromagnet?
The electromagnet would still work because one side is still connected
The electromagnet would become even stronger
The electromagnet would catch on fire
It would no longer work as a magnet because it relies on electric charge
What happens to the strength of the electric field if you increase the distance between positive and negative charges?
The strength of the electric field becomes stronger
no effect
The strength of the electric field will decrease
The electric field will become reversed
As you increase the distance between two charges, what occurs with arrows that represent a force in an electric field?
The arrows do not change
The arrows start to fade away
The arrows change direction
The arrows get brighter
Jax has been studying electromagnets in science. He wants to study the relationship between the distance from a microwave and its electromagnetic field (EMF). How could he do this?
Put an EMF meter inside the microwave
Use a EMF meter 5 cm away from different microwaves
Hold the EMF meter at the distance she always stands when using the microwave
Use the EMF meter at difference distances and compare results
