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.

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Presentation transcript:

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 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

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

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

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

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.

What do you notice about the electric charges?

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

Static Electricity Video *Have to copy and paste to web browser

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

Comprehension Closure Which charges attract? Which charges repel?

Exploration

Group Exploration: Static Electricity, Rubbing a Balloon Copy this chart MaterialObservation silk wool cloth plastic bag paper towel

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

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?

Exploration Closure How can static electricity be created?