2.21 and 2.22
2.21 and 2.22
24 November 2010
10:40
· 2.21 recall that insulating materials can be charged by friction
· 2.22 explain that positive and negative electrostatic charges are produced on materials by the loss and gain of electrons
Instructions
· Launch the application on this website:
http://phet.colorado.edu/en/simulation/balloons
· Rub the balloon on the sweater
· Stick it on the wall
· Charge a second balloon
· Move it close to the first balloon
Questions
· Why does the balloon get charged? Take a screen shot to illustrate your answer
· What happens when you move the balloons together? Why? Take a screen shot to illustrate your answer
