Give reasons for the following statements: 1. A cup of hot coffee kept on a table soon becomes colder. 2. The base of a saucepan should be made up of metal. 3. The handle of a saucepan should be made up of wood or plastic. 4. In winter, we must wear sweaters made up of fluffy wool.
Answers
Answer:
1. A cup of hot coffee kept on a table soon becomes colder due to the process of heat distribution of heat in the air. The rule of this process is that heat will flow from hotter end to the colder end, till both the temperatures become stable. So, the coffee kept in the cup will soon balance its heat with the surrounding environment.
2. The base of a saucepan should be made up of metal because metals are good conductors of heat. The more the heat, the more effective the cooking. This is the main reason why saucepan bases should be made of metals.
3. The handle of a cooking pan should be made of wood and plastic because these materials are poor conductors of heat. This will ensure that our hands don’t get burnt while cooking.
4. In winter, we must wear sweaters made of fluffy wool because this type of wool will trap as much as air as it can. As we know that air is a poor conductor of heat, it will make sure that our body heat does not escape, keeping us warm.
Hope it helps.
Please mark my answer as BRAINLIEST.
Explanation:
1. Because of the continuous flow of air around it.
2. So that when heated whatever is on it will also fill the heat.
3. To obstruct the flow of heat on the sauce pan.
4. Because wool gives warmness and heat to the body.