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Marta, Cato, and Juan plan a skit to illustrate one of the methods of charging.Marta and Cato are walking together. Each has one flower and one box of candy. Juan offers Cato a huge bouquet of flowers, but Cato can’t take it because his hands are full.Cato hands his flower to Marta and then turns to Juan to take the bouquet.Marta walks away in one direction with two flowers and one box of candy. Juan keeps the bouquet and walks away in the other direction. Cato looks sad standing alone with only a box of candy.

It models induction because an electron (a flower) transfers from Cato to Marta through direct contact.

It models friction because an electron (a flower) transfers from Cato to Marta through direct contact.

It models friction because the offer of flowers represents a charged object that causes an electron (a flower) to transfer from one object to another.

It models induction because the offer of flowers represents a charged object that causes an electron (a flower) to transfer from one object to another.

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Tracy scuffs her socked feet across a carpet. When she touches a doorknob, she gets a small shock.How did Tracy become charged?

through friction between her hand and the doorknob

through friction between her feet and the carpet

through conduction between her hand and the doorknob

through conduction between her feet and the carpet

Jason makes a graphic organizer for insulators and conductors and wants to add the following labels to it.Label 1: Lacks free electronsLabel 2: AluminumIn which regions should Jason place each label?

Label 1: XLabel 2: Y

Label 1: ZLabel 2: X

Label 1: XLabel 2: Z

Label 1: ZLabel 2: Z

Moira is drawing the electric field lines around a pair of charges. One charge is positive, and the other charge is negative.

away from each charge and meeting in the middle

away from each charge and curving away from one another

away from the positive charge and toward the negative charge

away from the negative charge and toward the positive charge

Which pair does NOT have an electric force between them?

a positive object and negative object

two positive objects

two neutral objects

two negative objects

Kiki makes a table to compare the particles in a magnesium atom to those in a magnesium ion.She knows that a magnesium ion has an electric field that points away from the ion. What values should she use to complete her table?

X: 14Y: 12Z: 12

X: 12Y: 12Z: 10

X: 12Y: 10Z: 12

X: 12Y: 12Z: 14

How do the charges compare when two objects are charged through friction?

The objects become oppositely charged and have equal amounts of charge.

The objects become positively charged and have equal amounts of charge.

The objects become negatively charged and have different amounts of charge.

The objects become oppositely charged and have different amounts of charge.

The area around a charged object that can exert a force on other charged objects is a(n) _________.

electric field

field line

conductor

electric potential energy

A positive rod is placed to the left of sphere A, and the spheres are separated.

Sphere A is negative and sphere B is positive because protons from sphere A are attracted to the rod and move to sphere B.

Sphere A is negative and sphere B is positive because electrons from sphere B are attracted to the rod and move to sphere A.

Sphere A is positive and sphere B is negative because electrons from the rod move to sphere B and protons then move to sphere A.

Sphere A is positive and sphere B is negative because protons move from sphere B to the rod and also to sphere A.

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