Which of the following explains why cooking utensils are made of metal but the handles are made of plastic?

Metal is a good conductor of heat while plastic is a poor conductor of heat.

Metal is hard while plastic is soft.

Metal is heavy but plastic is light.

Metal is durable while plastic is less durable.

Which of the following consists of objects that are good conductors of heat?

Iron wire, thumb tacks, steel ruler.

Iron lock, pencil, masking tape.

Aluminium cup, steel ruler, Plastic bottle.

Steel Spoon, paper towel, wollen scarf.

John set up the following experiment as shown below. He used two similar test-tubes and thumbtacks for the above experiment. When the copper wire was heated for some time, Thumbtack A dropped off before Thumbtack B. What can we conclude from the experiment?

Liquid X conducts heat better than Liquid Y.

Liquid X and Y boils at 100ºC.

Liquid Y is a poor conductor of heat.

Liquid Y conducts heat better than Liquid X.

P4 Sajs Science Quiz - Conductor Of Heat | Attempts: 841

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| Attempts: 841

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1/5 Questions

Which of the following are poor conductor(s) of heat?A: IronB: PlasticC: RubberD: Copper
- A only.
- D only.
- B and C only.
- A, B and D only.

P4 Sajs Science Quiz - Conductor Of Heat - Quiz

About This Quiz

Science assessment for P4 SAJS pupils after they have viewed the Power point slides on Heat.

2.

Which of the following explains why cooking utensils are made of metal but the handles are made of plastic?
- Metal is hard while plastic is soft.
- Metal is heavy but plastic is light.
- Metal is durable while plastic is less durable.
- Metal is a good conductor of heat while plastic is a poor conductor of heat.
Correct Answer

A. Metal is a good conductor of heat while plastic is a poor conductor of heat.

Explanation

The handle of the frying pan should be made of a poor conductor (plastic) of heat to prevent the user from getting burnt when handling it while the cooking utensils should be made of metal to allow the food to be cooked faster.

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3.

Which of the following consists of objects that are good conductors of heat?
- Iron lock, pencil, masking tape.
- Iron wire, thumb tacks, steel ruler.
- Aluminium cup, steel ruler, Plastic bottle.
- Steel Spoon, paper towel, wollen scarf.
Correct Answer

A. Iron wire, thumb tacks, steel ruler.

Explanation

Iron wire, thumbtack and steel ruler are made from materials that are good conductors of heat.

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4.

John set up the following experiment as shown below. He used two similar test-tubes and thumbtacks for the above experiment. When the copper wire was heated for some time, Thumbtack A dropped off before Thumbtack B. What can we conclude from the experiment?
- Liquid X and Y boils at 100ºC.
- Liquid Y is a poor conductor of heat.
- Liquid Y conducts heat better than Liquid X.
- Liquid X conducts heat better than Liquid Y.
Correct Answer

A. Liquid X conducts heat better than Liquid Y.

Explanation

Liquid X gains heat faster and transferred it to the glass. As a result Thumbtack A was able to drop off faster than thumbtack B.

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2
5.

Calvin poured hot water into 4 different cups. The temperature of the water in the cups were taken at the beginning of the experiement and again after five minutes. The temperature readings are recorded in the tabel below. A B C D Initial temperature 50 ºC 60 ºC 45 ºC 60 ºC Temperature after 5 minutes 42 ºC 45 ºC 40 ºC 55 ºC
- A
- B
- C
- D
Correct Answer

A. B

Explanation

Metal is a good conductor of heat. As a result, the difference in temperature should be the greatest as the cup will be able to conduct the heat of the water away quickly.

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Jun 26, 2009

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P4 Sajs Science Quiz - Conductor Of Heat

Which of the following are poor conductor(s) of heat?A: IronB: PlasticC: RubberD: Copper

Quiz Preview

Which of the following explains why cooking utensils are made of metal but the handles are made of plastic?

Which of the following consists of objects that are good conductors of heat?

John set up the following experiment as shown below. He used two similar test-tubes and thumbtacks for the above experiment. When the copper wire was heated for some time, Thumbtack A dropped off before Thumbtack B. What can we conclude from the experiment?