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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Write scientific reason. In the cold regions, snow falls in winter. - Science and Technology 1

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प्रश्न

Write scientific reason.

In the cold regions, snow falls in winter.

स्पष्ट करा
टीपा लिहा

उत्तर

  1. Snow is formed high in the clouds from water vapour.
  2. In cold regions when the temperature is extremely low, water vapour freezes around smoke or dust particles forming ice crystals.
  3. When these ice particles combine with each other they turn heavy and start falling to the ground.
    This gives rise to snowfall in cold regions in winter.
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पाठ 5: Heat - Write scientific reasons

संबंधित प्रश्‍न

Fill in the blank

Heat is a form of _______.


Name the mode of transfer of heat in the following :
(a) solid,
(b) liquid,
(c) gas
(d) vacuum


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.


Fill in the blank and rewrite the sentence.

If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ................. .


Cooking utensils are made from metals due to their property of ______.


What will absorb heat?

Iron griddle (tava)


What will absorb heat?

Glass vessel


What will absorb heat?

Wooden spoon


Give a scientific reason.

In winter, why does an iron pillar feel colder than a wooden pole?


With the help of a diagram, show that water is a bad conductor of heat.

The unit of heat is


The process of converting a liquid into a solid is called ________.


The amount of heat gained by a substance is equal to the product of its mass and latent heat.


Why does the bottom of a lake not freeze in severe winter though the surface is all frozen?


A device in which the loss of heat due to conduction, convection and radiation is minimized is ______.


Ice is kept in a double-walled container. Why?


We can absorb heat by rubbing two surfaces of some substances.


In summer, we prefer light – colored clothes and in winter we usually wear dark – colored clothes.


The sum of the kinetic and potential energy is called the ______ of the molecules.


Match the following:

  Column A   Column B
1. Heat a. Heat gained or lost in the change of state without any change in temperature
2. m × L. b. Heat gained or lost when there is no change of state
3. Temperature c. Form of energy
4. m × s × t d. SI unit of specific latent heat
5. J/Kg e. degree of hotness or coldness

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