Which of the following is a FALSE statement? Several days after a snowstorm, the

Question

Which of the following is a FALSE statement? Several days after a snowstorm, the roof on Jones's house is uniformly covered with snow, whereas on Smith's house next door the snow has completely melted off. A likely reason for this is that Smith's house has better roof insulation than does Jones's. Thermos bottles have a vacuum between the inner and outer layers of glass in order to reduce heat transfer due to conduction, since heat cannot conduct through a vacuum. When the metal cooling coils in a freezer become coated with ice this prevents the freezer from effectively removing heat from warm foods placed in the freezer. In some regions the following sign is frequently seen as one approaches a bridge: "CAUTION: BRIDGE MAY BE ICY". One reason you might expect a bridge to be icier than the road leading up to it is that the bridge has both its top and bottom exposed to cold air, whereas only the top surface of the road is in contact with cold air.

Explanation / Answer

From the given question.

1. False

If the roof has high insulation, then it wont transmit heat from inside of house to snow on roof. In that case snow should not melt.

2.False

Heat can conduct through vaccuum.

3. True

As ice is a good insulator, it prevents heat transfer to metal coil.

4.True

The freezing wind hits the bridge above and below and on both sides, so it's losing heat from every side. The road is only losing heat from its surface.

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