OPEN THIS DOCUMENT source: a great book to read. " the cartoon guide to Physics " Larry Gonicsh and Art HuffmanREAD CAREFULLY, and ANSWER THE QUESTIONS:1) mass is to mechanics what ________ is to electricity
2) Like charges ___________ but opposite charges ___________
3) We can separate charges by ___________ 2 objects (like hair and comb) together.
4) ______________ names the 2 kinds of charges positive and negative. Later the negative charges were
called __________ (orbiting the __________) the positive charges __________ (inside the ___________ )/
neutrons, also inside the ___________ have no _________.
5) When electrons are removed from an atom, it becomes ________ charged _________.
6) When you rub a comb with hair (or fur) , the comb becomes _______ charged and the hair _________ charged.
The comb gains __________ but the hair loses ___________.
7) A charged object like the comb (after being rubbed with hair) can attract neutral objects like small pieces of paper.
This is because, inside the paper, there is a charge s_________. This phenomenon is called p___________.
8) The electric force decreases with _____________
9) If you rub a rubber rod with hair, the rod becomes ________ and the hair __________.
But if you rub a plastic rod witty silk, the rod is __________ and the silk ______________.
10) materials like rubber, plastic, glass are electrical ________________. electrons can not move freely inside the materials
materials like metals, carbon rods, some solutions are electrical _________. electrons can move freely inside the materials.
A flow of electrons is what we call ______________.
11)
Coulomb's law gives you the formula for the ______________ force
between 2 charges/ The force decreases with the ____________
between the 2 charges. electrostatic means the charges don't __________. The unit of charge is the ________________.
1 electron has a charge of - _________ C.
12) Gravity (gravitational forces) always ___________ but electrical forces can __________ or ______________.
The _________ forces are weaker than the _________ forces.
13) charges are always _________. (Sum of positive and negative charges does not change, is constant, stays the same)
14) You can create pair of charges (+ and - ) from pure energy. ____________ rays, a particle of light, can produce
2 charges: a positron and an electron. If the positron and electron collide with each other, they can annihilate each other.
15) experiment in static electricity = extra credits. If I approve it.
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