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Science Nine Chapter Seven
Test Description: Science 9 Chapter 7
Instructions: Answer all questions to get your test result.
1) A neutral object has exactly the same number of
A
protons, neutrons, and electrons
B
protons and electrons
C
protons and neutrons
D
neutrons and electrons
2) A vinyl rod is rubbed with a cotton cloth. The vinyl rod becomes (-) charged and the cotton cloth becomes (+) charged. Which of the following describes the cotton cloth?
A
it has more electrons than protons
B
it has the same number of protons as electrons
C
it has gained electrons
D
it has more protons than electrons
3) Which of the following is a good conductor?
A
wood
B
copper
C
fur
D
glass
4) Charges are measured in
A
ohms
B
amperes
C
coulombs
D
watts
5) Two suspended balloons repel each other when brought together. What can you conclude about the balloons?
A
they have opposite charges
B
one balloon is neutral and the other balloon is negatively charged
C
they both have the same charge
D
one balloon is neutral and the other balloon is positively charged
6) Which of the following is not a law of static charge?
A
objects with the same chage attract each other
B
objects with opposite charges attract each other
C
charged objects attract neutral objects
D
objects with the same charge repel each other
7) The tool that can be used to detect static charges is called a(n)
A
magnetoscope
B
spectroscope
C
protoscope
D
electroscope
8) Electric forces that act on any pair of objects DOES NOT depend on which of the following
A
the type of charge on the objects
B
the distance between the objects
C
the amount of charge on the objects
D
the mass of the objects
9) Which of the following is an example of an insulator?
A
a lemon
B
salt water
C
rubber
D
copper
10) A Van de Graaff generator produces charges by using
A
blue lasers
B
glass ball bearings
C
rubber belts
D
tiny leprechauns
*select an answer for all questions
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