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
If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ______.
What will absorb heat?
Glass vessel
When an object is heated, the molecules that make up the object
The unit of heat and temperature are the same.
Calorie is the unit of ______.
The sun gives us light and heat.
In the arrangements A and B shown in the following figure, pins P and Q are fixed to a metal loop and an iron rod with the help of wax. In which case are both the pins likely to fall at different times? Explain.

Assertion: Small gaps left between railway lines.
Reason: It allows for the contraction of rails during summer.
What is heat energy?
Explain the following effects of heat.
Chemical changes
