Term 2 Full Syllabus Five Marks Questions

8th Standard EM

    Reg.No. :
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Science

Time : 01:00:00 Hrs
Total Marks : 50
    10 x 5 = 50
  1. Which one of the following statements about thermal conductivity is correct? Give reason.
    a) Steel > Wood > Water
    b) Steel > Water > Wood
    c) Water > Steel > Wood
    d) Water > Wood > Steel

  2. Soda bottle bursts sometimes when it is opened during summer. Why?

  3. How do astronauts breathe when they go beyond earth’s atmosphere?

  4. Why does a light paddle wheel placed in the path of cathode rays begin to rotate, when cathode rays fall on it?

  5. How can we prove that the electrons carry negative charge?

  6. Ruthresh, Hari, Kanishka and Thahera collected different samples of water from a well, a pond, a river and underground water. All these samples were sent to a testing laboratory. The test result showed the ratio of hydrogen to oxygen as 1:8.
    a) What conclusion would you draw from the above experiment?
    b) Which law of chemical combination does it obey?

  7. Name the different types of joints? Give one example for each type.

  8. Write a short note on different types of muscles

  9. Adolescence is the energistic stage. What health and good habits you want to develop?

  10. The heat capacity of the vessel of mass 100 kg is 8000 J/°C. Find its specific heat capacity.

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