Term -2 Class:8 Science 1. Heat - Choose - clickhere

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Term -2 Class:8 Science 1. Heat

வினாக்களை படித்து , புரிந்துகொண்டு விடைகளை தேர்ந்தெடுக்கவும்:
Understand the Question and choose the Correct answers:
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5 நிமிடத்திற்குள் கவனமாகவும் , விரைவாகவும் விளையாட்டை முடிக்க.
விளையாடி முடித்தபின் , அனைத்தையும் எழுதிப்பார்க்கவும். நன்றி.
உங்கள் முயற்சிக்கு வாழ்த்துகள்.

 

1. Heat energy increases the __________________ of the liquid molecules.
   1.   Kinetic Energy
   2.   Potential Energy
   3.   Hydration Energy
   4.   Elecctrical
2. When the water molecules receive more energy, the ________________ of water increases.
   1.   Temperature
   2.   Freezing
   3.   Potential Energy
   4.   None
3. Among the following, which will have more force attraction?
   1.   Ice
   2.   Water
   3.   Water Vapour
   4.   None
4. Sollid to liquid is ________________.
   1.   Melting
   2.   Sublimation
   3.   Freezing
   4.   Deposition
5. Deposition is ________________
   1.   Gas to solid
   2.   Gas to liquid
   3.   Liquid to solid
   4.   Solid to gas
6. Liquid to gas is __________________.
   1.   Vaporization
   2.   Sublimation
   3.   Condensation
   4.   Melting
7. The difference between condensation and vaporization respectively is __________________.
   1.   Gas to liquid and liquid to gas
   2.   Liquid to gas and gas to liquid
   3.   Gas to solid and solid to gas
   4.   Solid to liquid and liquid to gas
8. Liquid to ________________ is freezing.
   1.   Solid
   2.   Vapor
   3.   Gas
   4.   Liquid
9. Handles of cooking utensils are made up of plastic because they are ________________.
   1.   Poor conductors
   2.   Good conductors
   3.   Semi-conductors
   4.   None
10. Heating of air in the atmosphere is an example for ____________________.
    1.   Convection
    2.   Conduction
    3.   Radiation
    4.   Absorption