Term -2 Class:6 Science 1. Heat - Choose - clickhere

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Term -2 Class:6 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. SI unit of heat is _______________.
   1.   Joule
   2.   Kelvin
   3.   Celsius
   4.   Calorie
2. _____________________ are used to measure temperature accurately.
   1.   Themometers
   2.   Speedometer
   3.   Ammeter
   4.   Voltmeter
3. We can generate __________________ by rubbing two surfaces of some substances.
   1.   Heat
   2.   Current
   3.   Wind
   4.   Water
4. The measurement of warmness or coldness of a substance is known as _________________
   1.   Temperature
   2.   Current
   3.   Heat
   4.   Friction
5. The point at which the water boils and temperature becomes stable is called the ________________ of water.
   1.   Boiling point
   2.   Thermal equilibrium
   3.   Freezing point
   4.   Linear expansion
6. Solids __________________ on heating and _______________ on cooling.
   1.   Expand, Contract
   2.   Contract, Expand
   3.   Move, Stable
   4.   Stable, Move
7. Two objects are said to be in __________________ if they can exchange heat energy.
   1.   Thermal Contact
   2.   Expansion
   3.   Contract
   4.   Thermal equilibrium
8. The expansion in length is called __________________.
   1.   Linear Expansion
   2.   Volume Expansion
   3.   Cubical Expansion
   4.   Area Expansion
9. When an object is heated, the molecules of the object
   1.   Begin to move faster
   2.   Become heavier
   3.   Become lighter
   4.   Lose energy
10. When two liquids of the same temperature are mixed together, then the temperature of the resulting mixture will be.
    1.   Remains Same
    2.   Increases
    3.   Decreases
    4.   First increases then decreases