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Understanding Static Electricity: Building Charges & Fields

Explore what static electricity is, how charges are created, and how they interact to form electric fields. Conduct experiments and learn about attractions and repulsions between charges. Discover the phenomena of static electricity through hands-on activities and discussions.

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Understanding Static Electricity: Building Charges & Fields

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Presentation Transcript

  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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