Gold is a good conductor of heat.
Important Questions on Heat
Which of the following is an insulator?
Water, Glass, Mica, Brass.
Give reason for the following:
The metal knob feels colder than the wooden knob at the same temperature.
The following diagram shows an experiment to investigate the heat conductivity of three rods made of different metals. A cork is attached on each rod by was.
The results of the experiment are shown in the following table
| Type of rod | Time taken for the cork to drop |
| Steel | |
| Copper | |
| Brass |
Arrange, in an increasing order, the ability of heat conduction of these three materials.
The following diagram shows an experiment to investigate the heat conductivity of three rods made of different metals. A cork is attached on each rod by was.
The results of the experiment are shown in the following table
| Type of rod | Time taken for the cork to drop |
| Steel | |
| Copper | |
| Brass |
From the results, what conclusion can you make about the heat conductivity of different metals?
The following diagram shows an experiment to investigate the heat conductivity of three rods made of different metals. A cork is attached on each rod by was.
The results of the experiment are shown in the following table
| Type of rod | Time taken for the cork to drop |
| Steel | |
| Copper | |
| Brass |
What would you expect for the time taken for the cork to drop if a glass rod is used? Explain.
