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प्रश्न
When an object is heated, the molecules that make up the object
पर्याय
begin to move faster
lose energy
become heavier
become lighter
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उत्तर
Begin to move faster
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संबंधित प्रश्न
Match the following
| Column A | Column B |
| 1. mercury | 1. insulator |
| 2. wood | 2. water from 0°C to 4°C |
| 3. Aluminum | 3.absorbs |
| 4. contracts | 4.conductor |
| 5.black surface | 5. Thermometer |
Draw a labelled diagram of a thermo flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.
While deciding the unit for heat, which temperature interval is chosen? Why?
What will absorb heat?
Wooden board
1 calorie is 4.81 joules.
Write scientific reason.
In the cold regions, snow falls in winter.
______ is a form of energy.
A marble tile would feel cold as compared to a wooden tile on a winter morning because the marble tile ______.
To keep her soup warm Paheli wrapped the container in which it was kept with a woollen cloth. Can she apply the same method to keep a glass of cold drink cool? Give reason for your answer.
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?
