What Electric Field Lines Show: They are to represent an electric field.
What Electric Charges Attract and Which Ones Repel: Opposites attract and Like repel.
How an Electric Current can Create a Magnetic Field: You have a current and iron filings, and when the current is on a magnetic field shows. But once the current stops, the field goes away.
What Magnetic Field Lines Show: They show the direction of a magnetic field and always go from the North and South Poles.
Which Magnetic Poles Attract and Which Ones Repel: Opposite Poles attract and Like Poles Repel.
How a Changing Magnetic Field Can Create Electricity: Rotating the circuit or changing the strength of the magnetic field.