Electricity
Magnetism
Electricity and Magnetism
Atoms
More Magnetism and Electricity
100
The electric force between charged particles is dependent on the amount of charge present. If there is 4 electorns and 1 proton what type of charge will there be?
Negative charge of 3.
100
How does the magnetic field protect life on Earth?
The magnetic field directs charged particles toward the poles and then past Earth.
100
when electrical charges flow in a current they create a
Magnetic field
100
these are made up of Protons, Neutrons and Electrons
Atoms
100
Roman is using a bar magnet in an experiment to determine how its magnetic field lines look. He accidently drops the magnet, breaking it in two. He picks up both pieces and modifies his experiment to determine what happened to the magnet when he dropped it. What will happen to the magnetic field lines?
Both pieces of the magnet now have north and south poles and there is an attractive magnetic force between the two pieces where they broke that will be visible in the field lines.
200
what are the only two types of electric charge?
Positive, Negative
200
this is the area of affect around a magnet and is determined by the strength of the magnet
magnetic field
200
what creates an electromagnet
current flowing through a wire. especially when wrapped around a Farris material
200
this is what happens when there is an imbalance in the number of electrons and protons in an Atom
the atom has a charge or is positive or negative
200
this is the attractive or repulsive force between two poles
Magnetism
300
electricity that does not move through a current is called?
Static electricity
300
magnets always have a north and a south pole. never just one or the other. True or False
True
300
what happens to an electromagnet if you wrap a wire around the bar more times?
the strength increases
300
within an Atom this carries a positive charge
Proton
300
Vanessa is investigating how magnets react with each other. She holds an unmarked bar magnet in each hand and moves them closer together. As she moves the magnets closer together, she feels the magnets being pushed apart. Which poles of the magnets are most likely facing each other?
either both north or both south
400
this is the area of affect of an electric charge
Electric Field
400
Repel
400
electromagnets are _________ magnets, in that that dont always have a magnetic field
temporary
400
Within an Atom this carries a negative charge
Electron
400
this is the force created by the combination of electrical and magnetic forces
electromagnetism
500
name two things that effect the strength of an electric field
the amount of charge
the distance between charged atoms, or conductors
500
attract
500
what are common usages for electromagnets
Motors, generators, MRI machines, electric bells and buzzers.
500
Thsi particle has no charge at all.
Neutron.
500
Explain the differences between step up transformers and step down transformers.
A step-up transformer is a type of transformer that increases the voltage of electricity. It does this by having more turns of wire in the secondary coil (the output side) compared to the primary coil (the input side).
Conversely, a step-down transformer is a type of transformer that decreases the voltage of electricity. It has fewer turns of wire in the secondary coil compared to the primary coil.
600
this is the rate of flow of charged particles
Electric Current
600
Name something that can effect the strength of magnetic force
Distance,
Strength of the magnet (how uniformly the electrons are spinning)
the type of material the magnet is made from
600
What is the first right hand rule.
while the thumb points in the direction of the current, the fingers indicate the direction of the magnetic field?
600
positively charged and negatively charged atoms are _________to each other
Attracted
600
Awhina is constructing an electromagnet to demonstrate at the upcoming science fair. She is using wire, a nail, and a battery.
She is using identical materials to create three different electromagnets of varying strength. How can the same materials be used to create a stronger electromagnet?
Add more loops of wire around the nail to increase the magnetic field.