Advertisements
Advertisements
प्रश्न
Why does a piece of ice when touched with a hand, appear cool? Explain.
टिप्पणी लिखिए
Advertisements
उत्तर
On touching a piece of ice, heat flows from our hand (hot body) to the ice (cold body), and hence, it appears cold.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
What is meant by the term temperature.
Who is telling the truth?
Heat flows from an object at higher temperature to an object at lower temperature.
Why is a newly made quit warmer than an old one?
Name three devices which are used to detect heat radiations.
Name a substance which is an insulator of heat.
Give a scientific reason for the following:
In winter the birds fluff up their feathers.
Suggest some suitable way to remove a tight glass stopper from a bottle.
Name a liquid which is a good conductor of heat.
Match the following
| 1. | Heat | 0o C |
| 2. | Temperature | 100o C |
| 3. | Thermal Equilibrium | kelvin |
| 4. | Ice cube | No heat flow |
| 5. | Boiling water | joule |
Give reasons why –
we wear woolen clothes in winter
