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INTERNATIONAL INDIAN SCHOOL, JEDDAH Diamond is the hardest mineral and Graphite (used in pencil lead) is one of the softest. Sub: SCIENCE III-V BLOCK NAME :___________________CLASS:V ____ ROLL NO:_____ LESSON: 9 ROCKS AND MINERALS 1.Who am I? 1. I am a metamorphic rock formed from shale. You use me to make blackboards.___________________ 2. I am a sedimentary rock. You use me in the form of chalk._________ 3. I am formed by the metamorphosis of limestone. I have been used extensively to build the Taj Mahal._______________ 4. I am an igneous rock .Dentists use me for polishing teeth.___________ 5. I am a smooth sedimentary rockmade up of clay and mud particles.__________ II. Choose the right answer and tick in the given box: 1. Which of the following is formed by the metamorphosis of granite? a) Shale ( ) b) gneiss ( ) c) marble ( ) 2. Rocks formed by the cooling of magma a)Igneous ( ) b)sedimentary ( ) c) metamorphic ( ) 3. The magma that reaches the earth`s crust is called_______ a)Lava ( ) b) ignite ( ) c)basalt ( ) 4. Which of the following is used in thermal power plant to produce electricity? a)Quartzite ( )b) petroleum ( ) c) coal ( ) 5. _____________are the most valuable of all minerals. a)Granite ( ) b) gemstones ( ) c) marble ( ) III. Fill in the blanks:1. Minerals are mostly found in rocks as ___________________________. 2. Coal is obtained from________________________________________.. 3. Hidden fuels in the crust of the earth are ______________and______________. 4. Redfort in Delhi is made up of red_____________________________. IV. Write True or False 1. Igneous rocks are formed by the accumulation of sediments on the beds of rivers and oceans. [ ] 2. Petrol is used for dry cleaning of woollen clothes. [ ] 3. Minerals are added as fertilizers in soil to get a good crop. [ ] 4. Coal is used as fuel for aeroplanes and automobiles. [ ] 5. Sedimentary rocks are formed of many layers. [ ] 6. The hot liquid rock that lies below the earth’s crust is called lava. [ ] V.ENVIRONMENTAL SENSITIVITY a. Give reason: 1. Graniteis commonlyused formaking kitchencounters and floors. However, limestone cannot be used to do so. Why? Ans._______________________________________________________________ __________________________________________________________________ b. Fill in the boxes with the help words given below: Conglomerate,quartzite. Basalt, gneiss, pumice, limestone, sandstone, granite, slate sedimentary rocks igneous rocks metamorphic rocks