QUESTION

1. Which of these are good conductors, of heat?

A. aircon, electricfan, television

B. blackboard, books, papers

C. casserole, fork, plate

D. chairs, desks, table

ANSWER

>>>A

• » Mostly appliances like aircon, electricfan, and television is mostly contains metal like iron, copper, aluminum and something like that, anyways it's metal has a characterteristic of high conductivity to allow electricity flow on, that's why my answer is A.

2. What is widely used material for electrical devices?

A. bronze

B. copper

C. nickel

D. silver

ANSWER

>>>B

• » Copper is mostly known for his good conductor through electricity to flow on that's is very commonly used for devices and others appliances, that's why my answer is B.

3. Why are pots made of stainless steel?

1. Because they are made of light materials

II. Because they can easily cook the food

III. Because they are good conductors of heat

IV. Because they allow electricity to flow

A. I only

B. Il only

C. I and II

D. II and III

ANSWER

>>>D

• » Because iron can easily to cook food, and they allow electricity to flow on cooking, that's why pan is mostly contains iron to cook.

4. Which of these are NOT good conductors of heat?

A. brass, steel, nickel

B. concrete, mercury, platinum

C. glass, leather, silk

D. gold, silver, water

ANSWER

>>>C

• » Because glass, leather, and silk are obviously are bad conductor that's has a opposite function and purposes that doesn't allow the electricity to flow on, that's why my answer is C.

5. Which is the best electrical conductor?

A. brass

B. Copper

C. Graphite

D. silver

ANSWER

>>>B

• » Because copper is always have been used by others appliances as a excellent conductor through electricity to flow on that's is considered as a really really good conductor, that's why my answer is B.

6. Which is NOT an insulator?

A. asphalts

B. Ceramic

C. Mercury

D. Quartz

ANSWER

>>>B

• » Mercury is mostly known as a most dangerous element of the periodic table that's is a type of water that's has a good conductor to the electricity that's has purpose to create a nuke or bomb.

7. Which of these materials a good insulator?

A. copper wire

B. foil

C. gold wire

D. plastic

ANSWER

>>>D

• » Plastic is not a good conductor to the electricity that doesn't allow electricity to flow on, that is commonly used to hold some stuff like materials to hold on and etc, that's why my answer is D.

8. Which does electrical conductivity depend?

A. The condition of ordinary temperature and pressure.

B. The behavior of electrons moves through an object.

C. The electrons movement of protons and neutrons,

D. The amount of electricity that passes through

ANSWER

>>>B

• » Because the electricity conductivity depends on the behavior of electrons moves through an object that's makes a good conductor but I have a doubt that letter C can be a good chance of an answer.

9. Which statement is NOT true about insulators?

A. Electric charges do not flow freely through insulators.

B. Strong insulators are often used to coat or provide a barrier to conductors,

C. Materials that are poor conductor of heat and electricity are insulators.

D. Insulators also have electrons that move because of protons and neutrons.

ANSWER

>>>D

• » Insulators also have electrons that move because of protons and neutrons is a false because this information is all about the function of the conductor, that's why my answer is D.

10. Why are conductors important?

A. It allows us to cook our food easily

B. It entertainment usby watching television

C. It makes our household chores easier.

D. The behavior of electrons moves through an object.

ANSWER

>>>D

• » Because conductivity can illustrated by the behavior of electrons moves through an object that's is true but some importance of conductor is the allow us to cook our food easily, that's why my answer D.

__________________________

ANSWER

1. A
2. B
3. D
4. C
5. B
6. C
7. D
8. B
9. D
10. D

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