Question

In which direction does heat flow?

• A. From a hot area to a cold area
• B. From a cold area to a hot area
• C. Heat is a stationary phenomenon
• D. Heat flows in a random manner

Answer 1

The correct option is A

From a hot area to a cold area

Heat flows from a hot area to a cold area. When two bodies, one hot and another cold, come in contact with each other, the fast moving molecules of the hot body collide with the slow moving molecules of the cold body. As a result, the molecules of hot body become slower and the body itself becomes cooler, whereas the molecules of cold body becomes faster and the body becomes warmer.