Wednesday, January 4, 2023. Day 5

Do Now:

Homework to be completed:

Quiz on Electric Forces Friday, January 6th

• Review this study guide.

  • (This is the 12/16 Do Now assignment in GC)

1. Rocketman wrap-up due friday, January 6th

2. magnetism

   • MHGr7 Ch10 Magnetism

     • Read pages 344 through 348 of the chapter

     • Complete Parts A through D of the Lesson Outline

     • due Friday

Today’s agenda:

Triboelectric series and Induced Charge

Demonstrate phenomenon

Explain - diagram on board - students take notes

1. Triboelectric series - list order of materials that tend to give up charge or gain charge through contact.

   • Donors - give electrons up and become positively charged

   • Gainers - take electrons through adhesion and become negatively charged

2. Induced Charge - When the electrons move out of an area and leave an unbalanced positive charge

   • Happens in conductors

     • conductors - materials that allow electrons to move through them freely

       • metals

   • Does not happen in insulators

     • insulator - materials that resist the movement of electrons

   • Metal objects acquire positive and negative poles

3. Rub balloon on hair

   • Balloon takes electrons through adhesion

   • becomes negatively charge.

4. Placed near a metal can - electrons (negative charges)are pushed to opposite side.

   • can now has a positive and negative poles

5. opposites attract

   • can is pulled toward the balloon

Experiments in triboelectric Charge and Induced Charge

Can race bracket tomorrow - pick you clothing wisely!