Define true and false statements. Give your comments.
Date: 2015-10-07; view: 407.
1) Electrical charges that stand still are called static electricity.
2) Static electricity comes in two basic types - DC and AC.
3) Electricity is conducted through some things better than others do.
4) Conductors hold their electrons very tightly not to let electricity flow through them easily.
5) Rubber, plastic, cloth, glass and dry air are not good insulators and have very low resistance.
6) The difference between AC and DC has to do with the direction in which the electrons flow.
9. Match the halves:
1) Unbalanced atoms are considered .
2) A stationary electric charge typically produced ..
3) Moving electrons .
4) Most metals are used
5) ESD happens when
6) The property of a substance that
| 1 - | 2 - | 3 - | 4 - | 5 - | 6 - |
a) electrostatic charge tries to neutralize itself.
b) by friction is known as static electricity.
c) prevents the flow of electrons is called resistance.
d) make up an electric current.
e) to be a necessary condition to create electricity.
f) to make wires for carrying electrical current.
Vocabulary;
10. Use the text to find the antonyms. Make up your own sentences opposing one idea to another:
E.g.: Conductors differ from . in their ability to stop the electric current.
Conductors and differ in their properties to conduct electric current.
Conductors
DC
Positive terminal
Opposite charges
Current electricity
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