Term -2 Class:7 Science 2. Electricity - Choose - clickhere

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Term -2 Class:7 Science 2. Electricity

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. All materials are made up of small particles called _____________.
   1.   Atoms
   2.   Protons
   3.   Neutron
   4.   Electrons
2. The center of the atom is called ______________.
   1.   Nucleus
   2.   Protons
   3.   Atoms
   4.   Electrons
3. Positively charged particles are called _____________.
   1.   Protons
   2.   Electrons
   3.   Neutrons
   4.   Mesons
4. ____________ have no charge
   1.   Neutrons
   2.   Electrons
   3.   Protons
   4.   Mesons
5. _____________ is form of energy that is associated with electric charges that exists inside the atom
   1.   Electricity
   2.   Electron Flow
   3.   Electric Charges
   4.   Potential Difference
6. Electric charge is measured in a unit is called _______________.
   1.   Coulomb
   2.   Volt
   3.   Ampere
   4.   Ohm
7. Electrical charges are generally denoted by the letter ______________
   1.   q
   2.   I
   3.   t
   4.   #
8. The SI unit for measuring an electric current in ________________.
   1.   Ampere
   2.   Coulomb
   3.   Volt
   4.   Ohm
9. ________________ is in the direction opposite to electron flow.
   1.   Conventional Current
   2.   Electric Current
   3.   Electric Charges
   4.   Potential Difference
10. Which of the following will not conduct current?
    1.   Distilled Water
    2.   Iron Rod
    3.   Sodium Chloride Solution
    4.   Copper Wire