INDIANN SCHOOL AL WADI AL KABIR DEPARTMENT OF SCIENCE REVISION QUESTIONS CLASS VI

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1 INDIANN SCHOOL AL WADI AL KABIR DEPARTMENT OF SCIENCE REVISION QUESTIONS CLASS VI 1.ADAPTATIONS IN LIVING ORGANISMS 1) Whatare the different types of habitat? 2) Write the adaptations shown by the organisms shown below: Fig 1 Fig2 fig 3 fig 4 fig 5 Fig 6 fig 7 fig 8 Fig 9 fig 10 Page 1 of 11

2 3..Explain why,- a) Ducks have oil glands under their tails. b) Speed is important for the survival of animals like deer which live in grassland habitat. c) Desert plants referred to as Succulent plants. d) Stomata are present on the upper surface of the leaves of floating plants. e) A deer has eyes on the sides of its head. 4.Give reasonsa) Water lily is able to float on the water surface. b) The leaves are covered with cuticle in hydrophytes. c) Whales and dolphins have blowholes. d) Desert plants have long roots spreading into the soil. e) Leaves of the trees in tropical rainforest have drip tips. 2.MOVEMENTS OF THE BODY 1)What are x rays? How are they useful to us? 2)Explain the process that occurs when we bend our arms. 3) HOW DO THE FOLLOWING ORGANISMS MOVE? 4)Differentiate between joints ligaments and cartilage. Page 2 of 11

3 5) a) How does slime on the body help the snails to move? b) What is the importance of sensitive antennae in a cockroach? c) Name the sac like structure in fishes and state its importance to the animal. d) Identify the parts of the human skeleton shown and mention its functions. 6) Observe the human skeleton shown and label the parts marked. Write any four functions of the skeletal system. Fig: 2 Page 3 of 11

4 7.A, B and C are some parts of the human skeleton system. Part A is a long hollow rod like structure which encloses and protects spinal cord. Part B is at the top end of part A and protects the brain. Part C is at the lower end of part A and forms two ball and socket joints with thigh bones. What is A, B and C? 8. How do the muscles attached to bones bring about movement? Name the types of muscles which are involved in bending and straightening of the arm. 3. MEASUREMENT AND MOTION 1) The height of a person is 1.65m.express it in cm. 2)State the precautions to be taken while using a meter scale to measure the length of an object. 2) A carpenter is fixing a curtain rod on the wall by tightening a screw. How many different kinds of motion is the screw undergoing?. 3)Why are body parts not used for measurement? 4)Define the following terms with suitable examples- a) OSCILLATORY MOTION b) PERIODIC MOTION c) ROTATIONAL MOTION d) CURVILINEAR MOTION 5.What is the function of an odometer in a vehicle? 6.i)What are standard units of measurement? ii)why do we need standard units of measurement in daily life? 7.State the advantages of S.I. system. 8.i)What is parallax error? ii)while measuring the length of a pen the reading of the scale at one end is 2.5cm and the other end is 30.5cm.What is the length of the pen? Iii)Describe the rules to be followed to measure length correctly? iv)write down any two examples from daily life where estimation is used. 9. Explain with an example the statement-rest and motion are relative terms. Page 4 of 11

5 10.Identify and explain the types of motion shown by the following objects: i) ii iii iiv v 11.The time taken by a bus to travel from one destination to the other is 150minutes.Express it in hours. 12.Ranu brought a measuring tape from a fancy store, which was made of an elastic material.will she be able to measure the length of the given object correctly? Why? 13.Explain any one method to measure the length of a curved line. 14.Which type of motion is shown by the wheel and needle of a sewing machine when it works? 15. Acarpenter is tightening a screw on a wall.which types of motion does the screw undergo 4. LIGHT SHADOWS AND REFLECTIONS 1.Write the difference between natural sources of light and artificial sources with suitable examples. 2)Draw a neat diagram showing the convergent and divergent beam of light 3)Write down any three facts of a shadow. 4)Define the term reflection. Why is it important? 5) State the properties of an image formed. 6)When you are standing in a lighted stadium you are able to see many shadows, Why? 7)What are the three things required to form a shadow? 8)Give reasons for the following: a) The image obtained by a pinhole camera is always inverted. b) We are not able to see things behind a wall. c) The opaque objects do not allow light to pass through them. d) A shadow is not seen in a dark room. e) We are not able to see the table and chair in a room when it is dark. f) Grass looks green in colour. Page 5 of 11

6 g) At night, we sometimes see more than one shadow of ourselves. 9) Why is the shadow of an aeroplane or bird not visible on the earth? 10] How does a solar eclipse occur? Explain with the help of a ray diagram. 5. ELECTRICITY AND CIRCUITS 1) Explain the parts of a bulb. 2) Write the differences between the following termsa )A cell and Battery b) Closed circuit and Open circuit c) Primary cell and Secondary cell d) Conductors and Insulators 3)Label the parts marked. What is the function of the switch and the spring in a torch? 4). Electric kettles and toasters have wooden handles. Why? 5)Mention any two precautions that are advised while handling electrical devices. 6).Identify the types of circuits shown below and write the difference between them A B Page 6 of 11

7 7) Make the necessary changes in the circuit to make the bulb glow 6. AIR AROUND US 1)Define the following termsa) Pollutants b)pollution c)atmosphere d) Humidity 2)What is the importance of Ntrogen, Oxygen and Carbondioxide in air? carbondioxide is needed by the plants to carry out photosynthesis and also to trap suns heat 3)Explain the oxygen cycle. How is oxygen maintained in the atmosphere? 4)What is the role played by atmosphere?. 5) Ozone layer in the atmosphere protects us from harmful diseases. How? 6)State any four uses of air in daily life. 7)What are the major causes of air pollution? 8.)Draw a Pie diagram to show the components of air. b) Write a short note on the role of atmosphere. c)define oxygen cycle. State the importance of ozone layer. d) How do organisms living in water and those under the soil respire? e) Why do mountaineers and deep sea divers carry oxygen cylinders with them? f) Why should we inhale through our nose and not through our mouth? Page 7 of 11

8 9))Observe the given figures carefully. A B In the above activitya candle is burning in the case of A and not in B.Givea reason. b)observe the figures carefully. (i) (ii) What do you observe when water starts to boil?what do you conclude from this activity as shown in (i) and (ii). 10)a) What will happen if we keep a fish in a closed container without any aquatic plant? Give reason for your answer. b) A small wooden chair caught fire.a family member threw a woolen blanket over it covering the burning chair completely.why? c) Why is it advised not to sleep under trees during the night? 7. WASTE AND ITS MANAGEMENT 1.Differentiate between biodegradable and nonbiodegradable wastes. 2.Explain the term composting. 3. What doyou understand by land filling? Page 8 of 11

9 4. Name the park in Delhi which has been built on land fills. 5.How can you make a better use of the vegetable wastes in your house? 6. Differentiate between composting and vermicomposting. 8. SEPARATION OF SUBSTANCES 1.When is hand picking done? 2. Which method do you propose to separate the following mixtures?give reasons for your answer. a) Sand and iron pieces b)grains from husk c)bran from wheat flour d)salt from its solution e)mud from muddy water 3.Draw a neat labelled diagram of the distillation apparatus. 4.What are miscible and immiscible liquids. Give examples 5. What is loading? Why is it done? 6.Why are substances separated from mixtures? 9.MAGNETS AND THEIR EFFECTS 1.define the following terms: a) magnet b) artificial magnets c) magnetism d) magnetic force e) magnetic field.2. State the properties of magnets.. Page 9 of 11

10 3. what is a magnetic compass? 4.Why and how are magnets preserved? 5. State any four uses of magnets in daily life. 6. Why are we advised not to place magnets near TV and CD? 7.Name a technique used in medicine with the help of magnets. 8.What helps the security in airports to detect the entry ofcontraband items? 9.What happens if you suspend a bar magnet freely? LAB ACTIVITY 1)You have been given a piece of thread and a ruler. how would you measure the length of a curved line using these materials? 2) i. identify the instrument shown. ii. what is the nature of the image formed on the screen? iii.which property of light is shown? I.identify the method shown. ii.if you are using the north pole of the magnet to rub over the surface of the iron bar, which pole will the other end of the iron bar be? 3. iii.name two magnetic materials known to you. Page 10 of 11

11 4. I.which is the sure test for magnetism? ii.state the property of magnets shown in the figure given. i.name THE APPARATUS SHOWN IN THE FIGURE. ii. WHAT IS THIS APPARATUS USED FOR? iii. WRITE THE EXAMPLE OF A MIXTURE SEPARATED USING THIS APPARATUS IDENTIFY THE TYPES OF CIRCUIT SHOWN AND DEFINE THEM FIGURE 1 FIGURE 2 Page 11 of 11