Dass and Brown World School 7th Social Science

  Q (i). What are the three layers of the earth? Answer.  Crust, Mantle and Core are the three layers of the earth   Q (ii). What is rock? Answer.   Any natural mass of mineral matter that makes up the earth’s crust is called rock. Q (iii). Name three types of rocks? Answer.  There are three types of rocks:   1.Igneous rock.   2. Sedimentary rock.   3. Metamorphic rock. Q (IV). How are extrusive and intrusive rock formed? Answer.   Extrusive rocks are formed due to rapid cooling and solidification of molten magma on the earth’s surface. Intrusive rocks are formed when molten magma cools down deep inside the earth’s crust. Q (v). What do you mean by a rock cycle? Answer.  The change of one type of rock into another type under certain conditions in a cyclic manner. is called a rock cycle.   Q (vi) What are the uses of rock? Answer.   Following are some uses of rocks: 1.They are used as fuels. 2. They are used in industries. 3. They are used in medicines. 4. They are used in fertili

                  Exercise Questions. 1.     What is an ecosystem? Answer:   An ecosystem is the relation between the living organisms, as well as the relation between the organisms and their surroundings. 2.     What do you mean by natural environment? Answer:   Natural environment is the environment that is given to us by nature and comprises of land, water, air, plants and animals. 3.     Which are the major components of the environment? Answer:   The major components of the environment are – natural, human made and human. 4.     Give four examples of human made environment. Answer:   Four examples of human made environment are (a) Roads, (b) Monuments, (c) Industries and (d) Buildings 5.     What is lithosphere? Answer:   Lithosphere is the solid crust or the hard top layer of the earth. 6.     Which are the two major components of biotic environment? Answer:   Plants and animals are the major components of the biotic environment. 7.     What is biosphere?

                      Exercise questions answers.. Q1: Who was considered a “foreigner” in the past? Answer: In past (medieval period), foreigner is referred to any person who was not a part of the same society or culture. For example, a city-dweller might regard a forest-dweller as foreigner But two peasants living in the same village were not foreigners to each other even though they belong to different caste or religious backgrounds. Q2: State whether true or false: (a) We do not find inscriptions for the period after 700.  False (b) The Marathas asserted their political importance during this period.  True © Forest-dwellers were sometimes pushed out of their lands with the spread of agricultural settlements. True 9d) Sultan Ghiyasuddin Balban controlled Assam . Manipur and Kashmir .  False Q3: Fill in the blanks: (a) Archives are places where………………are kept. (b)…..  …………..was a fourteenth-century chronicler. ©…………..   And………… were some of the new crops introd

Exercise and some additional questions Q1: In a democracy why is universal adult franchise important? U niversal adult franchise is a very important, It promotes the idea of equality. It means that all adult (those who are 18 and above) citizens have the right to vote irrespective of their social or economic backgrounds. It makes the government more accountable towards her people. Q_2: Re-read the box on Article 15 and states two ways in which this Article addresses inequality? It states all citizens can go to public places like shops, cinema halls, restaurants etc. They cannot be stopped to enter these public places based on their caste, colour, religion or gender. It specifically mentions that any citizen irrespective of his background can use wells, ponds, roads or public property or places funded by the government. Q3: In what ways was Omprakash Valmiki’s experience similar to that of the Ansaris? Both of them suffer uneq