Indiana Science Grade 8

Chapter 10: Electricity

Section 1 Self-Check Quiz-Eng.

1.
Where does Las Vegas get most of its power from?
A)the Sun
B)coal
C)Hoover Dam
D)nuclear power
2.
Electrons have what charge?
A)positive
B)neutral
C)negative
D)positive and negative
3.
An atom has lost an electron to have a charge of +1. It is now __________.
A)an ion
B)an electron
C)a proton
D)a neutron
4.
If an atom gains an electron, what is its charge?
A)positive
B)neutral
C)negative
D)positive and negative
5.
What force keeps protons and neutrons together in a nucleus?
A)strong nuclear force
B)weak nuclear force
C)electrical force
D)gravitational force
6.
What happens to the strength of an electrical field as you get closer to it?
A)It decreases.
B)It increases.
C)It remains the same.
D)It disappears.
7.
How do insulators and conductors differ?
A)Insulators do not allow electrons to pass through them easily.
B)Conductors do not allow an electric current through them.
C)Insulators allow protons to pass through them.
D)Conductors allow protons to pass through them.
8.
Copper is an example of what?
A)an insulator
B)an electrical force
C)an ion
D)a conductor
9.
Feeling a shock from a metal door handle is an example of an __________.
A)insulator
B)electrical discharge
C)electrical force
D)ion
10.
When something is grounded, what happens to the excess electrical charge?
A)It is drained into the Earth.
B)It is drained into the atmosphere.
C)It is stored in the grounded equipment.
D)It disappears.
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