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Quiz Thursday so Do Now

Quiz Thursday so Do Now. Draw a picture of a “charged” electroscope… the ones we have been looking at had two thin metal strips hanging down… Can you tell the difference between a positively charged electroscope and a negatively charged electroscope by looking at it?. Grounding. -. -. -. -.

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Quiz Thursday so Do Now

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  1. Quiz Thursday so Do Now • Draw a picture of a “charged” electroscope… the ones we have been looking at had two thin metal strips hanging down… • Can you tell the difference between a positively charged electroscope and a negatively charged electroscope by looking at it?

  2. Grounding - - - - - • Since the Earth is very large it can neutralize: • negative objects byABSORBINGelectrons • positive objects by RELEASING electrons + + + + RULE #2 – GROUNDING MAKES AN OBJECT NEUTRAL - - - Grounding Symbol: -

  3. Induction – Negative Rod Induction – movement of charge without contact - - RULE #3 – ELECTRONS FLOW TOWARD LESS NEGATIVE/MORE POSTIVE AREAS - 1 3 - - - - - - - - - - - - - - - - + - - + + - - + - - - - - + - ANIMATE NEXT 2 + -

  4. Induction – Positive Rod Induction – movement of charge without contact - - - RULE #4 – INDUCTION = POLARIZATION 3 1 - + + + + + + + - - - - + - - + + - - + - - - - - - - - + - ANIMATE NEXT 2 - +

  5. Conduction – Negative Rod Conduction – movement of charge with contact RULE #5 – CHARGING BY CONDUCTION GIVES SAME CHARGE 1 - - - - - - - - - - - - - - - - - - - + - - + e- - ANIMATE NEXT 2 3 - -

  6. Conduction – Positive Rod Conduction – movement of charge with contact - - - RULE #5 – CHARGING BY CONDUCTION GIVES SAME CHARGE 1 + + + + + + + + + - - + - - + - - - e- + ANIMATE NEXT 2 3 + +

  7. 2nd Period

  8. The Electroscope UNCHARGED CHARGED - - LEAVES

  9. Induction – Negative Rod - e- e- - - - - - - - - - - - - 1 3 + e- - - RULE #4 2 + - - ANIMATE NEXT

  10. Induction – Positive Rod - e- e- + + + + + + + + + 3 1 - e- + + RULE #4 2 + + - ANIMATE NEXT

  11. Charging by Conduction – Negative Rod e- e- e- e- 1 5 - - - - - - - - - - - - - 2 - - - - - - - - - RULE #5 - - - ANIMATE NEXT 3 4

  12. Charging by Conduction – Positive Rod e- e- e- e- 5 1 - + + + + + + + + + 2 - + + + - + - + + RULE #5 + + + ANIMATE NEXT 3 4

  13. Charging by Induction – Negative Rod e- e- e- e- - - - - - - - - - - - - - 6 4 5 2 1 3 + + + + + + + + + RULE #6 + + + ANIMATE NEXT

  14. Charging by Induction – Positive Rod e- e- RULE #6 – CHARGING BY INDUCTION GIVES OPPOSITE CHARGE e- e- - + + + + + + + + + 6 4 2 1 3 5 - - - - - - - - - RULE #6 - - - ANIMATE NEXT

  15. End of 5.1.2 - PRACTICE

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