Properties of Magnets
Which poles go together?
N and N
N and S
S and S
The N and S poles go together.
Electromagnets are similar to _____, but not quite.
Magnets
What is the definition of energy?
The ability to make things move or change.
A wire that goes around a battery and a magnetic substance produces an _____.
Electromagnet
_____ can neither be created nor destroyed.
Energy
What do scientists use to predict outcomes with a system of magnets?
Magnetic Field Lines
What is the definition of an electromagnet?
Earth has its own _____ consisting of 2 poles.
Magnetic Field
An electromagnet is made up of a battery, a wire, and a _____.
Magnetic Substance
What is the definition of potential energy?
The energy that is stored within the object.
In the model, what are a group of magnets placed in a certain position called?
A system of magnets.
What are the materials needed in order to make an electromagnet?
A power source, a wire, and a magnetic substance.
Whenever potential energy decreases, _____ increases.
Kinetic Energy
An electromagnet works when _____ go through the wire and into the magnet, producing an electromagnetic field.
Charged Particles
Whenever a snowboarder gets higher and higher, their potential energy will _____.
Increase
The only position where the outcome is that the magnets do not move is when the magnets are _____.
Isolated
What is a charged particle made up of?
A net imbalance of protons and electrons, in addition to neutrons.
Energy in the system _____ from one form to the other.
Converts
True or False: Electromagnets require the use of a small magnet to make them work.
False
Spring stilts can help you bounce high in the air and run fast, due to your potential energy squeezing it, and transferring back to kinetic energy once the spring snaps back to its _____.
Natural Shape
Where is the magnetic north pole of the Earth placed?
On the south pole.
What is the charge of a proton? An electron? A neutron?
Positive, Negative, Neutral
fill in the blank with a word that means "to disprove": Scientists often _____ one another's claims by doing their own experiments to test variables.
Refute
Electromagnets carry a(n) ________ charge which then make the system _______.
electric, magnetic
What happens to the potential energy when a system of attracting magnets are pushed closer to each other?
The amount of potential energy in the system will decrease.