Work Sheet Class-VII Subject - Science WORK-SHEET

1 1 work SheetClass-VIIS ubject - 1 Chapter - 1 Nutrition is plantsChapter - 2 Nutrition in animalsChapter - 3 Fibre to fabricChapter - 4 HeatChapter - 5 Acids, Bases and saltsChapter - 6 Physical & Chemical ChangesChapter - 7 Weather, Climate and Adaptations of by :1. Jayanti Singh (TGT, )GGSS, Avantika, Sec-1, Rohini199551192. Upma Mittal (TGT, )GGSSS, Samaipur19890509 Under the guidance ofMrs. Shashi Bala Saini (Principal)SV, Sec-7, Rohini2 Lesson - 1 Nutrition in the following :-Column 1 Column IIAnswera)Plantsi)Saprotrophsab)Animalsi i)Autotrophsbc)Pitcher Plantiii)Heterotrophscd)Fungiiv)Insectiv orous Plantde)Lichensv)Symbiotic relationshipef)Cuscuta (Amarbel)vi)Parasitic label the following showing the following diagram of in the the following equation representing photo oyntheris. CO + H O.

2 + -2L-2 Nutrition in in the )The conversion of complex food is called _____ii)A _____ is an association of symbiotic relationship between an algaand a )A plant that has both autotrophic as well as heterotrophic mode of nutrition )The mode of taking in food by organism and its utilization by the body for itsvarious activities is called )The relationship in which two different organisms live together in such a way thatbenefit each other in some way is called the the following sentences by correcting the highlighted words :i)Roots are the main site of photosynthesis in _____ii)Boiled and cooled water with a pinch of salf and some sugar which is given tothe patient suffering from diarrhea is called iodine _____iii)False feet in amoeba are called _____iv)Cellulose is digested by ruminants in _____v)Green pigment present in leaves is _____Note :- Under lined words should be the items in Column I with Column II :Column IColumn IIa)Liveri)Acid releaseb)Salivary glandii)Storage of undigested food5c)Small intestineiii)Bile secretiond)Large intestineiv)Complete digestione)Rectumv)Absorption of waterf)Stomachvi)Release of faecesAnswer Complete the table :AnimalKind of FoodMode of FeedingSnailAntEagleButterflyMosquitoHou se FlyHouse FlyHelp boxes.

3 Column IColumn IIBloodSweetFleshSiphoningChewingNectarB loodCapturingSuckingWaste the following diagrams :6(a) Answers :ABCDEFGHelp Box :Buccal CavityOesophagusLarge IntestingSmall IntestineLiverPancreasStomachb)Answers :ABCD7 Help Box :BitterSourSweetSaltyc)Answer :ABCHelp Box :Food VacuoleNucleusPseudopodia8L-3 Fibre to & paste or draw & colour any four wool yielding below is a cross word puzzle based on this lesson. Use hints to fill inthe blank spaces with letters that complete the words.(D)(A)1)Removal of fluce of a sheepi)Separation of hair of differenttextures2)Thorough washing of sheep s ii)Covering of a pupaHair3)Rearing of silk )Its leaves are eaten by silk You must be familiar with the following rhyme remember and recite this infront ofyour class . Baa baa black sheep, have you any wool & paste a small piece of of silk moth(Colour all these diagram with your favourite colurs.

4 LIFE CYCLE OF SILK the symbol segreate hot and cold objects :ObjectHotColdIce creamTe aIceBurning whether true of false range of laboratory thermometer is from - 100C to : of our body can be measured by the help of clinical : materials which allow heat to pass through them easily are known : use iron utensils to cook food, because iron is a good conductor of : use woolen and dark coloured clothes during : in the blanks normal temperature of human body is insulators of heat are _____, conductors of heat are _____, use _____ coloured clothes during use woolen and _____ coloured clothes during Match the following :11 Column IColumn breeze flows breeze flows coloured clothes are preferred coloured clothes are preferred whether heat is transferred by conduction, convection or radiation :ABC12L-5 Acids, Bases and in the )An acid testes s_____ii)A base tastes b__ tt_____iii)LItmus, a natural indicator is extracted from )An indicator used in a neutralisation reaction is )Sugar is a the IColumn IIa)An antacidi)Formic acidb)An Antii)Milk of magnesiac)China Roseiii)Turns red litmus )An acidiv)A natural indicatore)A basev)Turns blue litmus a soil sample of your area, find out weather it is acidic, basic or neutral withthe help of red or blue litmus solution /paper.

5 Write this observation in the spacegiven to their nature give proper place to each substance given , Common Salt, Vinegar, Soap, Sugar, Lime water, Lemon Juice, the following Name of SubstanceLitmus sodaBlue14L-6 Physical And Chemical in the blanks is a _____ micro-organisms which convert the dead plants and animals to humus areknown as freezing point is ____0C at which water bacterium helps in the formation of is the process of coating iron objects with the layer of the following sentences by replacing the highlighted words in the physical properties of a substance is termed as chemical is the process in which water turns to ice when cold enough (below 00 Ctemperature.)Ans. of new substances by change in one or more substances is calledphysical process of deposition of brownish layer on iron when it is exposed to air andwater is called is the process of formation of solid crystals from Match the following.

6 Column IColumn (Fe)+ Oxygen (O2, from air)+ water (H2O) + H2O Vitriol / CuSo4 Copper Hydrogen Carbonate (NaHCO3) (OH) Sulphate Pentahydrate (Cuso4, 5H2o)d)Rust (Iron Oxide)Fe2O3 Answer the multiple choice questions which are affected during physical change of the of the following is not an example of crystallization obtained from sea flakes of sugar from sugar of of chemical change is sugar in of of of of the following can accompany a chemical change of the of the following is an alloy ,climate and Adaptation of animals to and tick the correct optionOptionsa)Feeling very hoti)Temperature below 200C orTemperature above 400Cb)Sweating too muchii)Humid weather or Dry weatherc)Very pleasant weatheriii)Temperature above 400C orTemperature about 200Cd)Too coldiv)Temperature less than 50C orTemperature more than 150Ce)Early morning temperaturev)Maximum temperature orof a dayMinimum the animals given below and write any two adaptive features of eachin the given )Name of the animalP___g__inTwo adaptive )Name of the animalP_____ B_____Two adaptive Measure the today s temperature with the help of laboratory thermometer andwrite it in the given ____ / and paste weather reports of any two successive days and complete thegiven report IWeather Report IIDateMaximumMinimumTime of SunriseTime of sunsetHumidityTemperature internet and find two beautiful pictures of any two migratory birds and paste them inthe given spaces.

7 (A)(B)63 Medium - EnglishSession 2012-13 class -VIIS ubject - 2 Chapter- 8 Winds, Stroms and cyclonesChapter- 9 SoilChapter- 10 Respiration in organismsChapter- 11 Transportation in Animals and PlantsChapter- 12 Reproduction in PlantsChapter- 13 Motion and TimeChapter- 14 Electric Current and its EffectsChapter- 15 LightChapter- 16 Water - A Precious ResourceChapter- 17 Forests : Our LifelineChapter- 18 Waste water storyUnder the Guidance ofMrs. Shashi Bala Saini (Principal)SV, Sec-7, RohiniPrepared by :Upma Mittal (TGT, )GGSSS, SamaipurID : 1310045 Jayanti Singh (TGT )GGSS, Avantika,Sec-1, RohiniID : 141306964L-8 Winds, Storms & Cyclones in the blanks :1)Moving air is called )The centre of the cyclone is the calm area which is called the _____ ofthe )_____ is a dark funnel shaped cloud that reaches the ground from )The word monsoon is derived from the arabic word mans am which )The instrument that measures the wind speed is called the following statements by replacing the highlighted )Warm air is heavier than the cold _____2)The pressure of the air decreases if the speed of the wind is _____3)Cyclones are constructive because they can damage houses, telephones andother communication systems, agriculture, trees _____4)The even heating of the earth surface is the main canse of wind _____5)The overfilled bicycle tube bursts because the pressure inside it becomes lessthan the atmospheric pressure the following.

8 Column 1 Column / JapanAnswer the symbol ( ), select four precautions you should follow when you are hitby a cyclone / not touch power lines which are fallen or switcheswhich are t go out for the sake of t make undue demands and pressurize the down on the and help your the multiple choice questions state was hit by two deadly cyclones in October & Nicobar affect & of the that effect formation of cyclones & of the above66L-9 Soil in the )Soil with greater proportion of big S____S___ lb)Soil with greater proportion of fine C____y____s____lc)Soil with highest percolation rate - __a__d__s___ld)Soil with almost equal amount of large and fine particles. - L____m__S____e)Soil with highest water holding capacity - C_____y and colour the following of Calculate the rate of a certain sample, it tooks 25 minutes for 300 ml to of percolation =----------------------Precalation rate or rate of percolation --_____=.

9 Ml / of waterPercolation the picture given below, a potter is making pots by using a special type of soilcan you name it?---------------------- samples of all three types of soil in small polythene bags and staplethem in the given soilLoamy SoilClayey soil68L-10 Respiration in in the blanks process of breaking down of food in the cell with the release of energy iscalled _____ respiration. (Cellular / Anaerobic) taking in of air rich in exygen into the body is called _____.(Inhalation / Exhalation). openings in a cockroach s body through which it takes in air in its body forrespiration are called _____. (Nostrils / Spiracles) large muscular Sheet which forms the floor of the chest cavity is called_____. (Diaphragm / Lungs). number of times a person breathes in a minute is termed as the_____ rate.

10 (Breathing / Running) the following statements by replacing the highlighted word are located in the buccal cavity : (Chest / Nasal)Ans. type of respiration in which food is broken down without the use of oxygen iscalled aerobic respiration. (Cellular / Anaerobic)Ans. are anaerobes. (Yeast / Dogs)Ans. respires anaerobically and yields water. (Fruit Juice / Alcohol)Ans. we feel drowsy, our breathing rate increases. (Remains same / SlowsDown)Ans. Match the following :Column (with oxygen) Oxygen, Carbon (Without Oxygen) Oxygen, Carbon in muscles (In Dioxide + water + energyabsence of oxygen) Dioxide + Alcohol + acid + EnergyAnswer the table :How do they breathe ? BoxSkinLungs, SkinStomataTeacheaGillsLungs70L-11 Transportation in Animals and have given one component of blood, write other three in the given the followingColumn IColumn IIa)Its presence makes blood appear )Phloemb)Fight against germs that may enter our )Plate letsc)Transport of )Haemoglobind)Transport of )White blood cellse)Clotting of )XylemAnswer Record your own pulse rate per )While / minb)After running for 4-5 / the following sentences by replacing the highlighted )Arteries are the vessels which carry carbon dioxide rich blood from all parts ofthe body back to the _____b)Veins carry oxygen-rich blood from the heart to all parts of the _____c)Ammonia is the main excretory product of human _____d)Uric acid is the main excretory product of _____e)