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Unit 1

Unit 1. Lesson 1: What is Static Electricity?. Objective. By the end of this lesson you should know what is static electricity and how to create static electricity. Comprehension. Vocabulary. static electricity - the buildup of electric charges in one place

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Unit 1

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  1. Unit 1 Lesson 1: What is Static Electricity?

  2. Objective • By the end of this lesson you should know what is static electricity and how to create static electricity.

  3. Comprehension

  4. Vocabulary • static electricity - the buildup of electric charges in one place • electric charge - a basic property of the tiny particles that make up matter • electric field – the area around electric charges where electric forces can act

  5. Static Electricity • Static electricity – the buildup of electric charges in one place • Often occurs when clothes are taken out of the dryer or by rubbing your feet on the ground and then touching something made of metal • Can cause a shock

  6. Electric Charge • Electric charge – a basic property of the tiny particles that make up matter • Can be positive or negative

  7. Electric Charges • Usually objects have an equal number of negative and positive charges • This makes the object have a neutral charge • The positive and negative charges cancel each other out

  8. Static Electricity • Only negative charges can move • Rubbing pulls negative charges away from one object onto another • Moving negative charges creates a positive charge for one object and a negative charge for the other.

  9. What do you notice about the electric charges?

  10. Static Electricity • Opposite charges attract, or go towards one another • Negative charges repel, or move away from each other

  11. Static Electricity Video http://www.youtube.com/watch?v=Z-77IzaXGcg *Have to copy and paste to web browser

  12. Electric Field • Electric field – the area around electric charges where electric forces can act • The push or pull between two objects is the electric force • The force gets weaker as you move further away from an object

  13. Comprehension Closure • Which charges attract? • Which charges repel?

  14. Exploration

  15. Group Exploration: Static Electricity, Rubbing a Balloon Copy this chart

  16. Group Exploration: Static Electricity, Rubbing a Balloon Directions: • Hang one balloon from the bottom of a desk • Rub the silk cloth over the second balloon • Slowly bring the second balloon towards the first • Record on your chart what happens • Then repeat directions with the wool cloth, plastic bag, and paper towel

  17. Group Exploration: Static Electricity, Rubbing a Balloon • Share and reflect: • What happened when your group rubbed the balloon with the silk cloth? The wool cloth? The plastic? The paper towel? • Why did this happen? • What causes static electricity?

  18. Exploration Closure • How can static electricity be created?

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