MANDALSIR

1.Study of Transmission oh heat.Investigate parameters that can affect the transmission of heat. 2.Explore the habitation,plantation etc. in a pond /lake in your vicinity. 3.Servey water resources in your locality.How much water do we consumes everyday?How much water is wasted due to leakage of taps in our homes. 4.Create a weather chart. 5.I care my tree!How?Study of its morphology,growth, health,what does it need?Does it respond to affection?When will it die? 6.Energy management. 7.Water management. 8.Waste management in your locality/city/town. 9.Birds of my town.

KENDRIYA VIDYALAYA ,BARRACKPORE (AFS) STD-VII,SUB-SCIENCE, CHAPTER EXCRETION Name _________________________________                                   Period _______ 1.Define excretion? 2.Write the difference between excretion  and egestion on the basis of the  substance given out and organ involved. 3. Write the names of different organs and substances in excretion in human being. 4. How and where these waste materials are produced in the body. 5. Why these waste materials should be removed from the body. 6. Write the names of the organs of urinary/excretory organs. 7. Cell                     metabolism             waste          Diffusion              Blood capillary             Artery                                                                      Useful substances                                                       nephrone         capillary