Transfer of Heat: Conduction

Which conducts heat more rapidly, iron or wood?

Using the reference table above, select every substance listed that is a good conductor of heat.

Arrange these materials in order from the lowest thermal conductivity to the highest.

Match each material on the left with its thermal conductivity on the right.

Match each material on the left with its thermal conductivity on the right.

Using \(H = \frac{k \cdot t \cdot A \cdot \Delta T}{d}\), calculate the heat (in calories) that flows through a glass window pane 15 cm by 20 cm and 0.3 cm thick in 1 hour, if one side is 5 Celsius degrees warmer than the other. Use k(glass) = 0.0025 cal/cm·s·C°.

Answer = 1($)

A copper rod (k = 0.92 cal/cm·s·C°) has a cross-sectional area of 2 cm² and is 50 cm long. One end is held at 90°C and the other at 10°C for 30 seconds. Using \(H = \frac{k \cdot t \cdot A \cdot \Delta T}{d}\), the temperature difference is 1($)\(^\circ\)C, giving a total heat flow of 2($) calories.

Materials that conduct heat poorly, such as wood or felt, are classified as heat ______.

Materials that conduct heat poorly, such as wood or felt, are classified as heat ______.