Electrostatics Jeopardy - Ms. Glinke

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Electrostatics
Where is the
love?
Did you say
Adam?
“Don’t Taze Me
Bro!”
Coulomb is cool
Charge This
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Final Jeopardy
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©Norman Herr, 2003
A-100
• QUESTION: How do two electrons act when
they are close to one another?
• ANSWER: They repel (like charges repel)
Answer
Question
A-200
• QUESTION: Two balloons are hanging
apart when you come into class, what is
the charge of each balloon?
• ANSWER: They must be the same
charge, either both positive or both
negative
Answer
Question
A-300
• QUESTION: What happens to the
electrons and protons when a balloon
sticks to the wall?
• ANSWER: Since the balloon is negative,
all the positive protons will align closest
to the balloon and all the electrons will
arrange themselves furthest away
Answer
Question
A-400
• QUESTION: An object that has an
excess number of protons is said to have
a ___________ charge.
• ANSWER: Positive
Answer
Question
A-500
• QUESTION: Balloons X , Y and Z are
suspended from strings as shown at the top.
Negatively charged balloon X attracts
balloon Y and balloon Y attracts balloon Z.
Balloon Z is ___
• ANSWER: negative, neutral, or positive
Answer
Question
B-100
• QUESTION: What three subatomic
particles make up an atom?
• ANSWER: Proton, neutron, and electron
Answer
Question
B-200
• QUESTION: What charge is an object
with excess electrons?
• ANSWER: negative
Answer
Question
B-300
• QUESTION: What is the electrical
charge when there are an equal number
of protons to electrons in an atom?
• ANSWER: Neutral
Answer
Question
B-400
• QUESTION: What scientist discovered
that electrons surround the nucleus?
• ANSWER: Bohr
Answer
Question
B-500
• QUESTION: Which subatomic particle
has the least mass?
• ANSWER: Electron, 9.11x10-31
Answer
Question
C-100
• QUESTION: Which particle transfers to
create static electricity?
• ANSWER: Electrons
Answer
Question
C-200
• QUESTION: When rubbing your
rubber-soled shoes on the carpet, most of
the electrons transfer from __________ to
___________.
• ANSWER: The carpet to your shoes
Answer
Question
C-300
• QUESTION: How does the Van de
Graaff generator work?
• ANSWER: …
Answer
Question
C-400
• QUESTION: If polyester has a higher
electron affinity than wool, which one
will have excess electrons when rubbed
together?
• ANSWER: Polyester
Answer
Question
C-500
• QUESTION: Name one example of how
we use static electricity commercially:
• ANSWER: Make-up, electrostatic spray
paint, dusting products, photocopiers,
hair products…ect
Answer
Question
D-100
• QUESTION: What unit is used to
represent a charge?
• ANSWER: A Coulomb
Answer
Question
D-200
• QUESTION: Two electrons are .2m
away, what is the force between them?
• ANSWER: ….
Answer
Question
D-300
• QUESTION: You have 5000 excess
protons, what is the mass? What is the
charge?
• ANSWER: ….
Answer
Question
D-400
• QUESTION: Two ping pong balls have
been painted with metallic paint and
charged by contact with an Van de Graaff
generator. The charge on the balls are 3.1x10-7 C and -3.7x10-7 C. Determine the
force of electrical repulsion when held a
distance of 42 cm apart.
• ANSWER: 5.8x10-3 N
Answer
Question
D-500
• QUESTION: What happens to the size of
the force between 2 charges when 1 of the
charges doubles? Hint: use Coulomb’s Law
• ANSWER: Force also doubles. They are
directly related.
Answer
Question
E-100
• QUESTION: What charging process
happens when two objects are rubbed
together?
• ANSWER: Charging by Friction!!
Answer
Question
E-200
• QUESTION: When a negative object
touches a neutral object, the neutral
object becomes _____ because it _____
electrons
• ANSWER: negative, gains
Answer
Question
E-300
• QUESTION: When a negative object is
grounded it now has a ________ charge.
If you use your finger to ground the
object, where do all the electrons go?
• ANSWER: Neutral charge, the excess
electrons transfer through your body to
the ground
Answer
Question
E-400
• QUESTION: How can you make a
neutral object positive?
• ANSWER: Charging by conduction with
a positive object
Answer
Question
E-500
• QUESTION: Explain how to charge a
neutral object by induction
• ANSWER: 1. Hover a charged object
over the neutral object 2. Ground the
object 3. Take away the charged object
and voila!
Answer
Question
FINAL JEOPARDY
You must answer both questions correctly to win!
• Question 1: Why does a rubber strip
become negatively charged when rubbed
with fur?
Answer
Question

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