9.1 Types of Electric Charge
9.2 Charging by Friction, Conduction, and Induction
Van De Graff generators
Attraction and repulsion
9.5 Applications of Static Electricity
100

They are the negatively charged particles in a material.

What are electrons?

100

An electroscope becomes charged when it is touched by a positively charged object. What kind of charging is this?

What is conduction?

100
What happens in the base of the VandeGraff generator to produce a charge? 

What is a friction between the rubber band and the foam roller?

100

What would happen between these two objects? 


+++                         - - -

- - -                          - - -

What is a attraction?

100

It is the induced charge on the surface of the Earth just before lightning strikes.

What is a positive charge?

200

And objects has gained electrons. What charge is it said to have? 

What is negative.

200

When a negatively charged object is brought near the ball of an electroscope, this is the charge on the metal leaves.

What is negative?

200

What happens in the head of the VandeGraff generator to produce a charge in the metal ball? 

What is conduction between the ball and the band. 

200

What would happen between these two objects? 

+ + -              - - + 

- - -                + + +

What is Attraction?

200

It is the result of walking on the carpet with socks

What is charging by friction

300

These kinds of charges attract.

What are different charges?

300

Cotton becomes charged after rubbing nylon and cotton together. What is this an example of? 

What is friction.

300

What law explains why your hair stands on end when you are connected to the Vande Graff generator? 

What is the law of repulsion?

300

What would happen between these two objects? 


- - -                             - - -

+ - -                            - - +

What is repulsion?

300

You have spilled a bunch of pieces of paper on the ground. It sure would be a pain to pick them all up... could you use a balloon to make your life easier? How would you do it? 

Charge up the balloon using friction so the pieces of paper will be attracted to it. 

400

The charge on an object with fewer electrons than protons.

What is a positive charge?

400

You shuffle across the carpet and when you touch the metal doorknob you feel a shock. It's what causes the shock.

What is a transfer of electric charge?

400

Why will a charge not build up if you are standing on the ground? 

What is grounding. The charges travel straight into the ground instead of building up.

400
This law describes what happens between like charged objects.

What is the law of repulsion?

500

An object with an equal number of protons and electrons is said to have this kind of charge.

What is neutral?

500

A negatively charged object is brought near the left side of a metal sphere. What is the charge on the right side of the sphere? 

What is a negative charge?

500
A neutral ball is brought near the VandeGraff generator. What will happen to its charge? 

What is the charges will rearrange. 

500

This law describes what happens between opposite charged objects

What is the law of attraction?

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