Electrostatics Jeopardy - Ms. Glinke

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Transcript Electrostatics Jeopardy - Ms. Glinke

Where is the love?

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Electrostatics

Did you say Adam?

“Don’t Taze Me Bro!” Coulomb is cool

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Charge This

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Final Jeopardy

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©Norman Herr, 2003

A-100

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QUESTION: How do two electrons act when they are close to one another? ANSWER: They repel (like charges repel)

Answer Question

A-200

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QUESTION: Two balloons are hanging apart when you come into class, what is the charge of each balloon?

ANSWER: negative They must be the same charge, either both positive or both

Answer Question

A-300

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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

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QUESTION: An object that has an excess number of protons is said to have a ___________ charge. ANSWER: Positive

Answer Question

A-500

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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

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QUESTION: What three subatomic particles make up an atom? ANSWER: Proton, neutron, and electron

Answer Question

B-200

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QUESTION: What charge is an object with excess electrons? ANSWER: negative

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B-300

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QUESTION: What is the electrical charge when there are an equal number of protons to electrons in an atom?

ANSWER: Neutral

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B-400

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QUESTION: What scientist discovered that electrons surround the nucleus? ANSWER: Bohr

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B-500

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QUESTION: Which subatomic particle has the least mass? ANSWER: Electron, 9.11x10

-31

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C-100

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QUESTION: Which particle transfers to create static electricity? ANSWER: Electrons

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C-200

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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

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QUESTION: How does the Van de Graaff generator work? ANSWER: …

Answer Question

C-400

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QUESTION: together? If polyester has a higher electron affinity than wool, which one will have excess electrons when rubbed ANSWER: Polyester

Answer Question

C-500

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QUESTION: Name one example of how we use static electricity commercially: ANSWER: Make-up, electrostatic spray paint, dusting products, photocopiers, hair products…ect

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D-100

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QUESTION: What unit is used to represent a charge? ANSWER: A Coulomb

Answer Question

D-200

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QUESTION: Two electrons are .2m away, what is the force between them?

ANSWER: ….

Answer Question

D-300

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QUESTION: charge? You have 5000 excess protons, what is the mass? What is the ANSWER: ….

Answer Question

D-400

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QUESTION:

3.1x10

-7 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 C and -3.7x10

distance of 42 cm apart.

-7 C. Determine the force of electrical repulsion when held a

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5.8x10

-3 N Answer Question

D-500

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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

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QUESTION: together? What charging process happens when two objects are rubbed ANSWER: Charging by Friction!!

Answer Question

E-200

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QUESTION: electrons When a negative object touches a neutral object, the neutral object becomes _____ because it _____ ANSWER: negative, gains

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E-300

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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: the ground Neutral charge, the excess electrons transfer through your body to

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E-400

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QUESTION: How can you make a neutral object positive? ANSWER: Charging by conduction with a positive object

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E-500

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QUESTION: Explain how to charge a neutral object by induction ANSWER: and voila! 1. Hover a charged object over the neutral object 2. Ground the object 3. Take away the charged object

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FINAL JEOPARDY

You must answer both questions correctly to win!

Question 1: with fur? Why does a rubber strip become negatively charged when rubbed

Answer Question