Standard 7 Balbharti Solutions

 Standard 7



3. Properties of Natural Resources



6. Measurement of Physical Quantities

7. Motion, Force and Work

8. Static Electricity

9. Heat




13. Changes – Physical and Chemical

14. Elements, Compounds and Mixtures

15. Materials we Use

16. Natural Resources

17. Effects of Light

18. Sound: Production of Sound

19. Properties of a Magnetic Field

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Natural Resources – Air, Water and Land - Standard 6 - General Science - Balbharati

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Natural Resources – Air, Water and Land Exercise Q.1 Fill in the blanks. (a) The layer of ozone gas absorbs ultraviolet  rays that come from the  sun to the earth. (b) Of the total water available on  the earth, fresh water forms 0.3   percent. (c) Both abiotic and biotic constituents  are present in the soil. Q.2 Why is it said that –? (a) The ozone layer is a protective  shell of the earth. Ans.  The ozone layer is like a protective shield around the Earth. It absorbs harmful UV rays from the sun, keeping us safe from their harmful effects. It plays an important role in protecting all living organisms on our planet. (b) Water is life. Ans. Living organisms cannot survive without water. The blood of animals and the sap of plants also have a high proportion of water. Therefore water is said to be life. (c) Seawater is useful even though it is  not potable. Ans.  Even though we can't drink seawater, it is still very useful in many ways:...
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Diversity in Living Things and their Classification - Standard 6 - General Science - Balbharati

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The Living World - Standard 6 - General Science - Balbharati

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