Magnets
Electricity
Forces
Vocabulary
Looking at models
100
What two poles must every magnet have?
North and South
100
What are the two types of electric charges?
Positive and negative
100
True or False
All forces have a magnitude and direction.
True
100
What does magnitude mean?
The amount or strength
100
Which charge has the greater electric force acting on it. 
C, because it is closer.
200
Opposite poles __________ and same poles ________.
attract, repel
200
Name two ways to increase the strength of an electric field?
Increase the charge
Decrease the distance between charges.
200
What is the net force on the object below?
2 N to the Left
200
What is a force ?
A push or a pull
200
Which charge has the least amount of force acting on it? 
B , becuase it is further away.
300
Name two ways to increase the strength of an electromagnet.
More coils
More current ( more batteries or power source)
Closer
thicker wire.
300
The two particles that are responsible for electric charges are _________ and _________.
Protons, electrons
300
What kind of force will cause an object to move?
An unbalanced force.
300
What is an electron?
A negatively charges particle
300
Attract of Repel
Electric or Magnetic?
Repel
Magnetic
400
When the magnetic field lines are closer together what does that mean?
The magnetic force is stronger.
400
Attract or Repel? 
Repel
400
What kind of force will have no motion?
A balanced force
400
What is a proton?
A positively charges particle
400
Describe two concepts this model is showing.
The electric field between two charges.
Attractive force
A positive and Negative charge.
500
What do magnetic field lines show us?
( hint 2 things)
The magnitude or strength and and the direction of the magnetic force.
500
What do electric field lines show us?
The strength or magnitude and the direction of the electric force.
500
Is the following scenario balanced or unblanced.
Balanced.
500
What is an independent and dependent variable?
Independent - the variable that changes in an investigation
Dependent - the variable that is measured in an investigation.
500
What is this a diagram of and what kind of force does it make? 
An electromagnet
The magnetic field lines