Magnetic Stuff 1
Magnetic Stuff 2
Magnetic Stuff 3
Magnetic Stuff 4
100
Something that can be changed and may be measured is called a _____.
variable
100
A set of two or more interacting parts that form a complex whole is called a _____.
system
100
An object, diagram, or computer program that helps us understand something by making it simpler or easier to see is called a _____.
model
100
TRUE or FALSE
The Earth has its own magnetic field.
TRUE
200
If you need to make part of a system move, you need to have _____, which can exist in many different forms.
energy
200
A magnet has two ends. Each end is called a _____.
magnetic pole
200
In order to interact with a magnetic field, an object must contain _____.
iron
ferrous (Technically, this word is an adjective, so you would say "ferrous metal.")
200
What are the 4 things you need to make your own compass?
magnetized needle
float (cork/paper)
water
magnet (for magnetizing the needle)
Don't worry about this for the quiz. We will make our own compasses if we have time later this week.
300
The lines that connect opposite magnetic poles are called _____.
magnetic field lines
300
The space around a magnet where forces can act on an iron (ferrous) metal is called a _____.
magnetic field
300
Magnetic fields will NOT be changed by _____. [You must write all of the correct answers.]
wood skin plastic iron aluminum
wood skin plastic aluminum
300
The parts of this system are held in place. When we release them the train cars will ____ because _____.
repel
"the same poles are facing each other" or "the magnetic force will push them apart"
400
When you align two magnets with the same poles facing each other, we say the magnets are _____.
repelled
400
When you align two magnets with the opposite poles facing each other, we say the magnets are _____.
attracted
400
The potential energy in this system will _____ [increase/decrease] because _____.
increase
the train car is moving AGAINST the magnetic force
400
When I let go of these magnets, they will _____ because _____.
repel
like-poles are facing each other
500
When energy is stored in a system due to its position or shape, we refer to that energy as _____.
potential energy
500
When an object is in motion, we refer to that energy as _____.
kinetic energy
500
When we move magnet #1 to the left, the potential energy in the system will _____ because _____.
increase
the magnets are moved against the magnetic force
500
Why did the two scientists argue over changes in the Earth's magnetic field?
They were polarized!