Post on 05-Jan-2020
Sci 9 1.1 Student Notes filled in.notebook
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Section 1.1 Static Electricity pg. 275-278The particles in an atom are electrically charged.
__ charge = protons__ charge = electrons__ charge = neutrons
Electrons are the charges that _____ because they are held together _______ in the atom.
Charges cause ____________ or ____________ between two substances.
Law of Electrical Charges:
• __________ charges attract
• Like charges _______• ____________ attract charged objects
___________ : equal amounts of positive and negative charges
___________:more protons than electrons
____________: more electrons than protons
___________________: a built up charge that does ____ move .
Charged objects cause a charge _____________ when they are brought _______ to neutral objects.
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Wall
The negative charges change their _________ in the wall causing an ______________ between the objects.
Types of Charges:
Sci 9 1.1 Student Notes filled in.notebook
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_________________________: a built up charge may be ___________ to another object and ______ to that object. This is the _______ that you feel.
Van de Graff GeneratorsA rubber belt ______ on a piece of metal inside this device. The ________ from the belt transfers to the sphere. This device builds up a static charge using __________.
QUESTIONS Section 1.11. How does a proton differ from an electron in terms of charge and location?
PROTON ELECTRON
2. What does it mean to have a static charge?
http://www.youtube.com/watch?v=7qgM1A3pgkQ&feature=related
3. Explain how a Van de Graff generator builds up a static charge.
4. a) What happens when like charges interact? _____________________
b) What happens when opposite charges interact? ________________
5. You rub your feet across a floor and electrons transfer from you to the floor. Are you now negatively or positively charged?
6. A neutral object contains no charge. Is this statement accurate? Explain.
7. Why is a neutral object attracted to a charged object?
8. You bring a negatively charged rod close to some tiny pieces of plastic. Some of the pieces jump up to the rod, but as soon as they make contact, they immediately fly away from the rod. Explain.