Science Nine Chapter Seven Question Preview (ID: 4189)


Science 9 Chapter 7. TEACHERS: click here for quick copy question ID numbers.

A neutral object has exactly the same number of
a) protons and neutrons
b) protons and electrons
c) neutrons and electrons
d) protons, neutrons, and electrons

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 gained electrons
b) it has more electrons than protons
c) it has more protons than electrons
d) it has the same number of protons as electrons

Which of the following is a good conductor?
a) glass
b) wood
c) copper
d) fur

Charges are measured in
a) coulombs
b) ohms
c) amperes
d) watts

Two suspended balloons repel each other when brought together. What can you conclude about the balloons?
a) they have opposite charges
b) they both have the same charge
c) one balloon is neutral and the other balloon is positively charged
d) one balloon is neutral and the other balloon is negatively charged

Which of the following is not a law of static charge?
a) objects with the same charge repel each other
b) objects with the same chage attract each other
c) objects with opposite charges attract each other
d) charged objects attract neutral objects

The tool that can be used to detect static charges is called a(n)
a) spectroscope
b) magnetoscope
c) electroscope
d) protoscope

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 mass of the objects
c) the amount of charge on the objects
d) the distance between the objects

Which of the following is an example of an insulator?
a) copper
b) salt water
c) a lemon
d) rubber

A Van de Graaff generator produces charges by using
a) glass ball bearings
b) blue lasers
c) rubber belts
d) tiny leprechauns

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