Static Electricity Quiz

PART I: TRUE OR FALSE (8x1=8 marks)

Read each statement. Write true or false in the space before each statement.

______1. Two objects, each having a negative charge, will attract one another.

_____2. A negatively charged rod touches a neutral metal conductor, which becomes charged. This is an example of charging by induction.

_____3. An electrostatically neutral object has equal numbers of electrons and protons.

_____4. Whenever you ground a positively charged object, electrons flow from the object into the earth.

_____5. In a conductor, electrons cannot move freely from atom to atom.

_____6. Only protons can move as charge is transferred from on object to another which gains a positive charge.

_____7. If the sodium atom loses an electron, it becomes a negative ion.

_____8. Two objects, each having a negative charge, will repel each other.

PART II: FILL IN THE BLANKS (9x1=9 marks)

Objects that have like charges each other.

Objects that have charges each other.

When fur is rubbed on the balloon electrons move from the to the . This is because the balloon’s material is an

.

Electrons have a charge.

Protons have a charge.

Neutrons have a charge.

PART III: TRUE OR FALSE B (9x1=9 marks)

T F : When wool is rubbed with glass the electrons move from the glass to the wool.

T F : When you comb your hair electrons move from your hair to the comb.

T F : A negative charge will attract to a neutral object.

T F : Protons do not move from one item to another.

T F : Lightning happens because the ground has a positive charge.

T F : A lightning rod helps prevent lightning.

T F : Air is a good conductor of electricity

T F : The particle theory of electricity is what scientists currently believe.

T F : If Mrs. Einarson touched a Van De Graff generator and she was standing on the ground her hair would all stand up on end.

PART IV: SHORT ANSWER (4x5=20 marks)

1)Using a diagram and a descriptive paragraph explain what is happening when you rub fur and a balloon and then stick the balloon to the wall.

2)How does lightning occur?

3)Describe an example of static electricity and explain exactly what is happening in terms of friction, transfer, charge, attraction, or any other details that will help to make your answer clear.

4)Mr. E will show you an experiment. Give a detailed description about what is happening. You may use a diagram if it helps.

5)What is the second way a lightning rod protects a house from lightning.

Bonus Question: What does “static” mean?