Quiz Review Electrostatics Static Electricity
Name______
Class/Period______
Physics
Quiz Review – Electrostatics – “Static Electricity”
15 Multiple Choice
5 Short Answer
Notes
Answer the following questions below to prepare for the quiz on Wednesday May 27th.
1)Describe the charges of a typical atom and how this “force” holds the atom together.
2)What is the basic rules regarding charges and how they attract or repel?
3)What is the difference between a positive ion and a negative ion?
4)Create a Venn Diagram below in which you show the similarities and differences between the force of gravity and the force of charge.
5)Draw a picture and clearly describe how a balloon rubbed on air can stick to the wall.
6)What is the difference between an insulator and a conductor? Give three examples of each.
7)Draw an illustration below that shows the creation and discharge of lightning. (Include + and – charges in your illustration) Write a description of how lightning is created and ultimately discharges to another cloud or the ground below your illustration.
8)Draw an illustration and explain how the Van DeGraff machine creates a charge and ultimately discharges this charge build up.
9)Describe the difference between conduction and induction and give examples of both occurring.
Name______
Class/Period______
Physics
Quiz Review – Electrostatics – “Static Electricity”KEY
15 Multiple Choice
5 Short Answer
Notes
Answer the following questions below to prepare for the quiz on Tuesday.
1)Describe the charges of a typical atom and how this “force” holds the atom together.
The proton in the center is positive and the electrons around the outside are negative. The opposite charges attract, keeping the electrons from flying away from the atom
2)What is the basic rules regarding charges and how they attract or repel?
Opposite charges attract and like charges repel
3)What is the difference between a positive ion and a negative ion?
Positive ions have lost electrons while negative ions have gained electrons
4)Create a Venn Diagram below in which you show the similarities and differences between the force of gravity and the force of charge.
GravityCommonCharge
1Depends on massdistance1Depends on charge
and distanceand distance
2attractsboth attract2attract and repel
5)Draw a picture and clearly describe how a balloon rubbed on air can stick to the wall.
6)
Rubbing balloonPositive balloon inducesOpposite charges attract
removes electronscharge in wallso balloon sticks to wall
7)What is the difference between an insulator and a conductor? Give three examples of each.
Insulators don’t allow electricity through them (hold electrons tight) – glass, plastic, rubber
Conductors let electrons through them (hold electrons loosely) – copper, aluminum, gold
8)Draw an illustration below that shows the creation and discharge of lightning. (Include + and – charges in your illustration) Write a description of how lightning is created and ultimately discharges to another cloud or the ground below your illustration.
------
+ + + + + + + + + + + + + + + + + + + +
Friction of air and water creates static, with a positive charge collecting in a cloud. This induces a negative charge in the ground under the cloud. Lightning starts in the clouds and works backwards to the ground or to a negatively charged cloud
9)Draw an illustration and explain how the Van DeGraff machine creates a charge and ultimately discharges this charge build up.
Moving belt creates friction with brush. Charge collected at brush transfers to the dome – then discharges from the dome like lightning
10)Describe the difference between conduction and induction and give examples of both occurring.
Conduction requires contact for electrons to transfer – rubbing the balloon on your sweater, touching the balloon to the Van DeGraff machine.
Induction is caused by one charges object moving closer to another but not touching – this pushes electrons in the 2nd object making sides have charges, but the whole object is neutral. Bring the balloon to the wall is induction