PAKISTAN INTERNATIONAL SCHOOL, RIYADH

Transcription

1 PAKISTAN INTERNATIONAL SCHOOL, RIYADH REVISION WORKSHEET Sessin CLASS: IV Subject: G. Science Name: Class/sec: _ Q1: SHORT ANSWERS. Ql: Name the smallest and largest bne in human bdy? Q2: What is the number f bnes in human bdy? Q3: Define muscles? Q4: What is a jint? Which tw types f jints have been discussed in this unit? Where is each f them fund in the bdy? Q5: What activity we can perfrm with the help f jint? Q6: Hw many types f muscles are there? Describe each f them with an example. Q7: What are a child's first set f teeth called? - Q8: Hw and why d teeth decay? Q9: Which teeth are used fr grinding fd? Page 1 f 10

2 ----- Ql0: what is the number f milk teeth and permanent teeth? ---- Qll: What are the different types f permanent teeth? ---- Q12: What is plaque? ---- Q13:What is meant by classificatin? Why d scientists classify things? ---- Q14: What is the main difference between vertebrates and invertebrates? ---- Q15: Hw can yu prve that bat is a mammal? ---- Q16: Write tw characteristics f birds? Ans: Q17: Hw a crcdile different frm a frg? ---- Q18: Why d fish lay many eggs? Q19: Why are the eggs laid by fish and amphibians prtected by a jelly-like substance? ---- Page 2 f 10

3 Q20: Where des the embry that is grwing inside the egg, get its fd frm? Q21: Define the fllwing terms: (a) Slute (b) Slvent Ans: Q22: Explain what type f mixture a slutin is? ---- Q23: Name at least three cmmn slutin yu use in yur daily life? Ans: Q24: Is a slute always in slid frm? Supprt yur answer with examples frm yur daily life? Ans: Q25: Why water is called a universal slvent? ---- Q26: Which substance a mixture cntain? ---- Q27: What is a slutin? ---- Q28: Suppse yu are making sme tea. Yu d nt have a strainer r a clean piece f clth. Which methd wuld yu use t separate the tea leaves frm the tea? Page 3 f 10

4 Q29: Where d we use the magnetic methd f separatin? Q30: Hw wuld yu separate the cmpnents f a mixture cnsisting f salt, sand and water? Q31: Hw many seasns are there? Name them Q32: Define kinetic energy? Q33: Which tw scales are cmmnly used t measure temperature? Q34: Which instrument is used t measure temperature? Q2: Fill in the blanks. A bne is an example f a _ muscles cntract and relax when pumping bld arund the bdy. A place in a vertebrate's bdy where tw r mre bnes meet is a _ The tissue that jins tw bnes tgether is knwn as _ The jint which mves a part f ur bdy nly in ne directin is knwn as _ jint. The jint that can mve a part f ur bdy in a circular directin is knwn as jint. The stmach is an example f muscles. Muscles jin the bne with the help f a tissue called _ Page 4 f 10

5 The cmbinatin f the muscular and skeletal system is called _ An animal which maintain its bdy temperature by absrbing heat frm the surrunding envirnment is An animal that maintains its bdy temperature internally and change it with the surrunding temperature, is _ Animals which d nt have a backbne are called Animals which have a backbne are called The new creature/animal grwing inside the egg is knwn as the _ The utside cvering f a bird's egg which prtects the embry is called the _ The yellw part f the egg which stres fd fr the embry is called The clear sticky liquid inside an egg is called _ The uter cvering f an insect's egg is made f a substance called _ and all lay eggs f A slutin is a transparent and mixture. Slute + = slutin. Fish can breathe in water because disslves in water If a substance disslves in anther substance it is called ---- If a substance des nt disslve in anther substance it is called --- The slid which remains n the filter paper after filtratin, is the _ and the liquid which passes thrugh the filter paper is the _ The prcess which changes a liquid int gas is knwn as --'- The prcess which is used t separate heavier slid particles frm a liquid is called _ Evapratin is a methd f separatin used t separate a Slid frm a liquid. Chalk pwder can be separated frm a liquid using the methd knwn as _ Page 5 f 10

6 The imaginary line n which the earth rtates is called the The mvement f the earth, causing day and night, is called -= The earth mves arund the sun and this mvement is called ---- The earth takes The earth takes day t spin nce n its axis. days t cmplete ne rbit arund the sun. The path in space f ne bdy as it ges arund anther bdy is called an _ Changing seasns n the earth are caused by the Earth's tilt n its _ The area f the earth which leans away frm the sun has the seasn. The time the earth takes t rtate nce n its axis is called The average kinetic energy f particles in a substance is called _ The ttal energy f particles in a substance is called _ The flw f a thermal energy frm a warmer bject t a cler bject is knwn as _ The instrument which is use t measure temperature is called _ All matter is made f tiny particles called _=_ The nrmal human bdy temperature n the Celsius scale is _ The melting pint f ice is Fahrenheit and Celsius. The temperature at which pure water bils is Fahrenheit and Celsius. Temperature that is lwer than O Cis written with a sign. Nthing can get clder than Celsius and this is called _ Q3: Unseen True/False. An adult has a set f 32 permanent teeth. _ Canine are the tughest f all the teeth. _ We shuld take t much sweets and sweetened drinks We shuld brush ur teeth, twice a day. _ Platypus is a mammal that lays eggs instead f giving birth t their babies. _ Frgs are amphibians. _ The smaller egg is a humming bird's egg. _ Inside the egg, the albumen and ylk mix tgether. _ Page 6 f 10

7 Eggsf fish and amphibians are very hard. _ Eggsf different animals are f different clrs, shapes and sizes. _ The gas in fizzy drinks is called xygen. _ Sand is insluble in water Milk is knwn as universal slvent Salt is insluble in water. _ Sedimentatin is a prcess used t settle dwn suspended slids in water. _ Electrmagnets are used t srt metals frm the junk in scrap yard. _ The earth spins n its axis. _ The earth takes 30 hurs t rtate n its axis The imaginary line (axis) runs thrugh the center f earth frm nrth t Suth Ple. The seasns d nt affect ur daily lives. _ Mving bjects have kinetic energy. _ All matters are made up f tiny particles called atms. _ Human bdy temperature changes all the time. _ Humans are cld blded. _ Q4: Circle the crrect answer. Which ne f the fllwing is an example f an amphibian? a) Lizard b) salamander c) turtle d) bat Which f the fllwing is nt a mammal? a) Frg b) platypus c) hrse d) cat Adult frgs breathe in water thrugh their a) Lungs b) gills c) skin d) nstrils Which f the fllwing is nt a reptile? a) Lizard b) snake c) turtle d) salamander Reptiles breathe thrugh their a) Skin b) lungs c) gills d) skin and lungs Which f the fllwing is nt a characteristic f an amphibian? a) They have mist and slippery skin. b) They lay eggs in water. c) They can live n land, and in water. d) They are warm blded. The bdy f birds is cvered with a) Scales b) hair c) feathers d) fur Which f the fllwing is an example f an egg - laying mammal? a) Hney bee b) platypus c) muse d) whale Which f the fllwing is an example f an invertebrate? a) Rabbit b) turtle c) msquit d) dlphin Page 7 f 10

8 The substance which is disslved t make a slutin is the a) Slvent b) slute c) slutin The substance in which the slute is disslved t make a slutin is the a) Slvent b) slutin c) slute A clear, transparent mixture f tw, r mre than tw, things is a a) Slutin b) slvent c) slute Which ne f the fllwing gases is disslved in fizzy drinks? a) Oxygen b) nitrgen c) carbn dixide Which ne f the fllwing is sluble in water? a) Salt b) chalk c) flur Which f the fllwing methds will be used t separate chalk pwder frm water? a) Evapratin b) decantatin c) filtratin The separatin methd that invlves heating t change liquid int a gas, is knwn as: a) Filtratin b) evapratin c) sedimentatin Which f the fllwing wuld yu use t separate pieces f irn frm pieces f plastic? a) Clth b) filter paper c) magnets Which methd f separatin is used when draining water frm rice? a) Evapratin b) filtratin c) decantatin Electrmagnets are used t srt sme frm junk. a) Plastic b) metals c) wd Hw many days des the earth take t cmplete ne rbit arund the sun? a) 265 b) 365 c) 465 Hw many hurs des the earth take t cmplete ne turn n its axis? a) 24 hurs b) 34 hurs c) 44 hurs Which f the fllwing is crrect? Seasnsare caused due t the a) Distance f the earth frm the sun. b) Rtatin f the earth n its axis. c) Revlutin and tilted axis f the earth. The fixed path f the earth n which it mves arund the sun is called its a) Axis b) rbit c) equatr The time the earth takes t rtate nce n its axis is called a a) Day b) mnth c) year The time the earth takes t revlve nce arund the sun is called a a) Day b) mnth c) year Temperature is the kinetic energy f particles. a) Ttal b) average c) partial Thermal energy is the energy f particles. a) Ttal b) average c) partial The flw f thermal energy frm a warmer bject t a cler bject is knwn as a) Heat b) temperature c) ptential energy Page 8 f 10

9 Any temperature n the Celsius scale which is lwer-than that f melting ice (0 ) is written with a -{) sign. a) Minus b) plus c) multiply The nrmal human bdy temperature n the Celsius scale is a) sr b) 40 c) 98.6 Q5: Match each definitin in clumn A with the term in clumn. Clumn A The ttal kinetic energy f p articles f a substance The average kinetic energy f particles f a substance The flw f energy frm a warmer t a cler bject A tissue that hlds tw r mre bnes as a mveable jint The frame wrk f bnes in a vertebrate's bdy A grup f tissues perfrming a specific functin A thick sheet f tissues that attaches a muscle t a bne The building unit f all living things A persn wh checks and lks after yur teeth Rtting f the teeth Tth used fr ripping Thin sticky layers f germs Tth used fr cutting Widest and strngest teeth The substance which is disslved t make a slutin A clear transparent and hmgenus mixture f tw, Or mre than tw things A substance which can disslve int anther substance A substance in which the slute is disslved t make a slutin The slid that remains n the filter paper after filtratin The liquid that passesthrugh a filter paper Clumn B temperature thermal energy heat rgan ligament cell skeletn tendn incisr mlars dentist canine decay plaque slvent slute sluble slutin filtrate residue Clumn A Clumn B The methd used t separate heavier slid particles frm a liquid The methd 0 separatin in which the liquid is heated The spinning f a bdy n its axis The rbiting f ne bject arund anther T lean, incline, slpe, r slant The path in space f ne bdy as it ges arund anther bdy The time the earth takes t cmplete ne rtatin n its axis Page 9 f 10 evapratin decantatin a day rbit revlutin rtatin tilt

10 Q6: Label the different types f permanent teeth (page#12) and draw a diagram f a bird's egg and label the parts f egg (page#28). NOTE: Detail answers are als included given in syllabus. Page 10 f 10