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Plastic Bag Lab

Plastic Bag Lab. Pg. 21. Answer the following questions. What happens when you rub your feet on the floor and then touch the door knob ?. Answer: You feel a “shock” . Was there a charge produced? Y or N Which object has the charge feet or door knob?.

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Plastic Bag Lab

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  1. Plastic Bag Lab Pg. 21

  2. Answer the following questions • What happens when you rub your feet on the floor and then touch the door knob? • Answer: You feel a “shock” • Was there a charge produced? Y or N • Which object has the charge feet or door knob?

  3. Question/Problem: What makes objects attract and repel? • Hypothesis: If objects are charged then they will attract or repel because the charges affect its behavior.

  4. Activity #1-Hand to Plastic • Cut 2 strips from a plastic grocery bag so that each is about 2–4 cm wide and about 20 cm long. • Hold the plastic strip firmly at one end. Then grasp the plastic strip between the thumb and fingers of your other hand. • Quickly pull your top hand up so that the plastic strip runs through your fingers. Do this three or four times. • Allow the strip to hang down. Then bring your other hand near it. • Write “attract” or “repel” in the chart on the activity sheet to describe what happened

  5. Report your Results-Hand to Plastic • What happened? • Draw pictures of how the charges were interacting between your hand and the plastic

  6. Activity #2- plastic to desk • Charge one strip of plastic the same way you did previously. • This time, bring the plastic strip toward your desk or chair. • Write “attract” or “repel” in the chart.

  7. Report your Results-Desk to Plastic • What happened? • Draw pictures of how the charges were interacting between the desk and the plastic.

  8. Activity #3-Plastic to Plastic • Charge two strips of plastic • Slowly bring the two strips of plastic near each other. • Write “attract” or “repel” in the chart on the activity sheet.

  9. Report your Results-plastic to plastic • What happened? • Draw pictures of how the charges were interacting between the plastic and plastic

  10. Results • What can we infer about charges and particles that make up the substances around us?

  11. Activity #4-Balloon and paper confetti • Rub a balloon on your hair or clothes. • Bring the balloon slowly toward small pieces of paper

  12. Report your Results- paper confetti and balloon • What happened? • Draw pictures of how the charges are interacting between the confetti and the balloon.

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