Advertisements
Advertisements
Question
Advertisements
Solution

Water is a bad conductor of heat
An ice cube is wrapped into a wire mesh and is put at the bottom of the glass test tube. The test tube is then heated near the top of the water. It will be noticed that though the water at the top starts boiling, the ice at the bottom does not melt. This clearly shows that water is a poor conductor of heat.
APPEARS IN
RELATED QUESTIONS
Define the term heat.
What will absorb heat?
Steel spoon
What will absorb heat?
Soil
1 calorie is 4.81 joules.
Write scientific reason.
In the cold regions, snow falls in winter.
Define one calorie.
Observe the picture given in figure. Water is being boiled in a pan of wide base.

- Which position P or T will feel warmer?
- Fill up the boxes P and T to indicate the mode of flow of heat to the hand.
Arrange the following in order of decreasing the expansion of heating: Steel, milk, air.
What is heat energy?
On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?
