9.1 Types of Electric Charge
9.2 Charging by Friction, Conduction, and Induction
9.3 Conductors and Insulators
9.4 Electric Force
9.5 Magnetism Static Electricity
100
They are the negatively charged particles in a material.
What are electrons?
100
Charging the balloon by rubbing it against fur is what type of charge transfer?
What is friction?
100
A material that can easily transfer electrons from atom to atom.
What is a conductor?
100
Static charge force work over _____ distances
What is short distance?
100
How many poles does a magnet have?
What is 2
?
?200
The electric field lines point away from this charge
What is the positive charge?
200
When a negatively charged object is brought near a sphere of an electroscope, the negative charges on the metal sphere leaves down to the leaflets. This process is called charge transfer by _______
What is Induction?
200
It is an isolated conductor with a sharp point located at the top of tall buildings.
What is a lightning rod?
200
The effect on electric force when charged objects are moved away from each other.
What is a decrease in electric force?
200
If the magnet breaks then, each new magnet has __ pole (s)
What is 2?
300
These kinds of charges attract.
What are different charges?
300
What are the 3 methods of charge transfer?
What are Conduction, Induction and Friction?
300
Give 3 examples of conductors.
What is iron, copper, nickel?
300
The unit used to measure electric charge.
What is a coulomb?
300
To increase the strength of an electromagnet you can
A. increase the number of turns (coils)
B. increase the current (voltage)
C. larger core
D. all of the above
What is D?
400
The Electric Field lines start from the positive charge and ends at the ________charge.
What is a negative charge?
400
You shuffle across the carpet and when you touch the metal doorknob you feel a shock. It's what causes the shock.
What is a transfer of electric charge?
400
Give 3 examples of insulator?
What is wood, glass, and styrofoam?
400
Two ways to increase electric force.
What is decreasing distance or increasing charge?
400
Ferromagnetic materials are ____, _____, _____
What is cobalt, iron, and nickel?
500
Same Charges
What is repel?
500
A negatively charged object is brought near the left side of a metal sphere. A grounding wire is attached to the right side of the metal sphere. Later, the negatively charged object and the grounding wire are removed. This is the charge left on the metal sphere.
What is a positive charge?
500
When a metal sphere is given a charge, the charge spreads out evenly over the surface of the sphere. It is the cause of this.
What is the repulsion of like charges?
500
if the distance between two charges is increased by three times then the electric force will reduce to ___
What is 1/9?
500
The magnetic needle of the compass point to the magnetic _____ pole and the geographic ____
What is South, North?