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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
    instead of holding it in your hand?
  • 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
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