Charge and Atoms
Describe the charge of a proton, electron, and neutron.
What is:
Protons = +
Electrons = -
Neutrons = no charge
Two protons, or two positively charged objects will experience a ______________ electric force.
What is "repulsive?"
When combing your hair, you may notice that the comb and your hair become charged by this method.
What is charging by friction?
When you charge two pieces of tape by sticking them onto a table and pulling them off, electrons are transferred from the top piece to the bottom piece. Describe the electric force when a negatively charged balloon is brought near the top piece.
What is attractive?
What does the "static" in "static electricity" mean?
What is stationary?
When an atom gains some extra electrons, we could call it a ______________.
What is a negative ion?
This phrase describes the relationship between the amount of electric charge on an object and the strength of the electric force it will feel.
What is directly proportional?
When you touch a Van de Graaff generator, you are charging yourself with this method.
What is conduction?
Describe the electric force felt by the aluminum foil leaves of an electroscope when a positively charged PVC pipe is brought near the top.
What is "repulsive?"
Give an example of dynamic electricity.
<Answers may vary>
This subatomic particle is usually the one that moves when an object becomes charged.
What is an electron?
This quantity is inversely proportional to the strength of the electric force.
What is distance (between two charged objects)?
You bring a positively charged PVC pipe next to a soda can and it attracts. You have charged the soda can with this method.
What is induction?
When touching a Van de Graaff generator, electrons move from your hand, to the positively charged dome. This is caused by what method of charging?
What is charging by conduction / contact?
The electric field lines of a negative charge point __________ the charge.
What is "toward?"
Protons are not usually transferred between objects, because _______.
What is "they are bound inside the nucleus of the atom"?
Describe the electric force between a positively charged object and a neutral insulator (like a small piece of paper).
What is "attractive?"
(Each atom in the insulator will polarize as the positive object draws electrons closer to its surface.)
Putting a fork into an electrical outlet would be one way to charge yourself by this method.
(Don't ever do this, you don't need me to tell you that.)
What is conduction / contact?
Bringing a negatively charged balloon close to an electroscope will cause the foil leaves on the electroscope to have this type of charge.
What is negative?
Which stores more charge - a charged piece of tape or a charged balloon?
What is the charged balloon?
You are having a sandwich for lunch, and it is electrically neutral. What does that tell you about the number of protons and electrons in the sandwich?
What is "they are equal?"
Describe the electric force between a negatively charged object and a neutral conductor (like a small piece of aluminum foil).
What is "attractive?"
(Each electron in the conductor will be pushed away from the negative object, leaving positive charge nearby.)
In the electrostatic tape lab, this method of charging allowed you to get a charged piece of tape (or balloon) to attract small paper dots.
What is charging by induction?
When charging a Van de Graaff generator, electrons are carried away from the dome by the conveyor belt. This means the discharge rod, connected to ground, will have this type of charge when brought close to the dome.
What is negative?
This is a region around a charged particle that exerts a force on other charged particles.
What is an electric field?