# Chapter%204%20Electricity%20and%20Magnetism - PowerPoint PPT Presentation

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## Chapter%204%20Electricity%20and%20Magnetism

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### Chapter 4 Electricity and Magnetism Lesson 1 By: Mr. Vorick ... A: Vocabulary Electric charge: a basic property of the tiny particles that make up matter. – PowerPoint PPT presentation

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Title: Chapter%204%20Electricity%20and%20Magnetism

1
Chapter 4 Electricity and Magnetism
• Lesson 1
• By Mr. Vorick

2
Lesson 1 Essential Question
• EQ What is static electricity?
• H
• A

3
Vocabulary
• Electric charge a basic property of the tiny
particles that make up matter. Electric charges
can be positive or negative.
• Static Electricity The buildup of electric
charges in one place.
• Electric field The area around electric
charges, where electric forces can act.

4
Lab Rub a Balloon
• Why do you hang the balloon from the table
• What is the benefit of using several different
materials to rub the balloons?

5
Lab Rub a Balloon
• 1.) Compare your observations in steps 2 and 3.
• 2.) Think about how the balloons and materials
acted. Compare that to what sometimes happens
when clothes are taken from a dryer.
• 3.) Which of your observations support the
inference that a force acted on the balloons and
the materials?

6
Two Kinds of Change
• How does electricity work?
• Push and Pulls during the lab were caused by what?

7
Electric Charges
• Basic property of the tiny particles that make up
matter.
• Positive and Negative
• and charges cancel each other out
• Most matter usually has a balance of the two
charges
• This is called being neutral
• How did you change this during the lab?

8
Electric Charges
• Negatively Charged when an object has more
negatively charged particles than positively
charged
• Positively Charged more positive than
negatively charged particles
• Opposite charges attract, charges that are the
same repel or push away from each other.
• Magnet example

9
Static Electricity
• The buildup of charges in one place
• Lab Rubbing the two balloons with wool made
each negatively charged so they repel eachother.

10
Separating Charges
• Most of the time, objects are neutral
• To see a change you must separate negative
charges from positive charges
• How do you do this?

11
Rubbing
• Pulls negative particles off one object onto and
onto another.
• Only negative charges move this way, positive
charges will not move.

12
Electric Forces
• The push or pull between objects that have
different charges
• Electric Field the space around positive and
electric charges.
• The force gets weaker the farther you move from
the object
• The field extends is all directions from the
charge
• The field attracts opposite charges and repels
identical charges

13
Essential Question
• EQ What is static electricity?
• A