This is the name we give to materials that are attracted to magnets.
What are metals
100
This is what you produce when you spin a magnet
What is electricity
100
This is the type of energy that can be used to make a magnet by coiling wire around a nail and attaching it to a battery
What is electricity
100
This is the definition of electricity
What is the movement of electrons
100
This is the variable that we change on purpose in an experiment
What is the independent variable
200
This is the name we give to magnets made out of iron
What is a ferromagnet
200
This is the type of energy that motors produce
What is kinetic energy
200
This is what happens to the domains when the electromagnet is connected to the battery
What is
- all of them are pointing in the same direction
or
- they are aligned/ straight
200
This is what we call the number of electrons passing through a wire per second
What is the current
200
This is the variable that we measure as a result in our experiment
What is the dependent variable
300
This is what happens when we place the north poles of two magnets near each other
What is repelling
300
This is the name we give to machines that turn kinetic energy into electrical energy by using a magnet
What is a generator
300
This is the reason why electromagnets are not permanent magnets
What is - they depend on electricity to create a magnetic field and so they can be turned on and off
300
This is what we call the pushing force or potential difference causing the electrons to move
What is the voltage
300
This is what we keep the same in our experiment
What are controlled variables or constants
400
This is what we call the area around a magnet where the magnetic force is acting
What is the magnetic field
400
The fact that motors and generators can change one type of energy into another is an example of how energy can't be _____________________ or _______________________
What is created or destroyed
400
This is one way of increasing the strength of an electromagnet
What is increasing the number of loops around the electromagnet
or
what is increasing the current
400
This is the way we calculate the total power of a circuit
What is current times volatage
400
This is why we need a control group in our experiments
What is "having something to compare to"
500
This is the reason why the needle in a magnet is the north side of the magnet, even though it is attracted to the earth's geographic north pole.
What is the earth's reversed magnetic field
500
This is the relationship between motors and generators
What is opposites
500
These are 3 uses of electromagnets
What is use in:
- phones
- computers
- scrap yards
- televisions
- radios
500
This is the name of the law that connects resistance, current and voltage
What is ohms law
500
This is why it is important to control all variables in your experiment
What is " so that your experiment is valid and so you know that only your IV caused your DV"