Science - 7th lesson - second term - i

       SCIENCE

SECOND TERM PAPER - i

7TH LESSON - FORMS OF ENERGY AND USES


1. Work is a, 

    .........................................................................................................................................

2. Defined what is energy. 

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3. What is the international unit of measuring energy ?

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4. Name 5 main forms of energy.

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5. defined what is kinetic energy.

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6. Write the energy transformation. 

   i. Wind Power Station - ..............................................................................

  ii. Radio - .....................................................................................................

 iii. Solar cell - ...............................................................................................

iv. Dry cell - ...................................................................................................

v. Waterfall - ...................................................................................................

vi. Electrical bell - ...........................................................................................

7. Which energy stored in plants as food ?

.......................................................................................................................................

8. Name five substances which stored electrical energy.

 ...................................................................................................................................................

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9. Which type of energy is stored in the spiral sprig ?

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10.Defined What Is Energy Transformation. 

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11. What Is Meant By potential energy ?

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12. Write main two importance of the light. 

........................................................            .................................................................         

13. Name 4 sources of light. 

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14. Energy contained in sound is known as, 

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15. Defined what is chemical energy,

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16. Name 5 Chemical Substances. 

.........................................           ...........................................     ...............................................

           .............................................................           ............................................................

17. What is known as "Mechanical" energy ?

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18. Write the observation and the conclusuion of the "avtivity 7.8"


Observation -.........................................................................................................................

Conclusion - .............................................................................................................................

19. The picture shows, 




A ..................................................................................Station. 




              Made By Thiseni Weerasinghe




Comments

  1. THISENI WEERASINGHE12 November 2021 at 04:02

    This is the first paper that i made

    ReplyDelete
  2. THISENI WEERASINGHE12 November 2021 at 04:04

    it's a science paper
    i will send another paper soon !
    You can share those papers for your English medium friends too.

    ReplyDelete

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