SUMMATIVE ASSESSMENT II ( ) SCIENCE / Class IX /

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1 Page of 9 II SUMMATIVE ASSESSMENT II (04-) SCIENCE / Class IX / 90 Time allowed: hours Maximum Marks: 90 (i) (ii) (iii) (iv) (v) (vi) 4 0 (vii) (viii) 7 70 (ix) 4 4 (x) (xi) General Instructions : (i) (ii) (iii) (iv) (v) (vi) (vii) (viii) (ix) (x) (xi) The question paper comprises of three Sections, A, B and C. You are to attempt all the sections. All questions are compulsory. There is no choice in any of the questions. All questions of Section-A, Section-B and Section-C are to be attempted separately. Question numbers to in Section-A are one mark questions. These are to be answered in one word or in one sentence. Question numbers 4 and in Section-A are two marks questions. These are to be answered in about 0 words each. Question numbers 6 to 6 in Section-A are three marks questions. These are to be answered in about 0 words each. Question numbers 7 to in Section-A are five marks questions. These are to be answered in about 70 words each. Section B has OTBA questions. Question number is two marks, Question number is three marks and Question number 4 is five marks question. Question numbers to in Section-C are multiple choice questions based on practical skills. Each question is a one mark question. You are to select one most appropriate response out of the four provided to you. Question numbers 4 to 6 in section C are two marks questions based on practical skills. These are to be answered in about 0 words each. IX

2 4 Page of 9 SECTION-A Write the symbol and latin name for the following elements : Sodium Potassium Why did Rutherford select gold foil for his -particle scattering experiment? An organism does not have a well defined nucleus and organelles. State its kingdom. How moths of certain families are able to escape capture from bats?what is the range of frequencies associated with infrasound ultrasound SI Name any two forms of energy. Define the SI unit of energy. 6 O O (i) (ii) (iii) (iv) Write difference between O and O. Give one example in each of the following cases : (i) Monoatomic molecule (ii) Diatomic molecule (iii) Tri atomic molecule (iv) Tetraatomic molecule 7 8 Ca, K, Na, Cl, Ar

3 Page of Which of the following species have 8 electrons? Ca, K, Na, Cl, Ar Chemical properties of all the isotopes of an element are similar. State reason. X M Why chemical properties of all the isotopes of an element are same? Name the isotopes used in the treatment of Goitre and Cancer. An element X has electrons in its M shell. What is its atomic number? Most mammals give birth to young ones. How do they nourish their young ones? Name two egg-laying mammals. Which part of the body is attacked by the bacteria causing tuberculosis? If they enter : through the nose through the mouth (i) (ii) IX IX Given below are few situations : (i) Geeta of Class IX was having common cold. She sits with Sarika who also develops the diseases. (ii) Animesh of Class IX shifted to a new residence, with his family, where water purification system has not been installed yet. He develops Cholera and dysentery.

4 Page 4 of 9 Associate these situations with their mode of transmission and assign appropriate category to them. 0 kg 0 m (g 0 m/s ) An object of mass 0 kg is raised to a height of 0 m above the ground. Find the potential energy of the object at its highest point. If the object is allowed to fall freely, what is its kinetic energy when it is half way down. Give reason to justify your answer. (g 0 m/s )? 4? Explain why a ship made of steel floats on water but a steel needle sinks. Pin and nails are made to have pointed ends. Why? Define the three characteristics of sound. (M) 6?? Loaded test-tube placed in pure milk sinks to a certain mark (M). Now some water is mixed with the milk. Will the test-tube sink more or less? Explain. What is lactometer?

5 7 Page of 9 One day Tanvi saw from the window of her room that a "Bansuri wala" was going through the street. Tanvi bought the "Bansuri (flute) from him. She started playing with flute and was surprised to hear the musical sound produced by it. She asked her father about its working who explained the mechanism of production of musical sound by the flute. What type of waves are produced in the air column of flute? What is the difference between a soft sound and a loud sound? What quality is shown by Tanvi? (e) Define the following terms : Atom Molecule Avogadro s number Valency (e) Molar mass Name the scientist who introduced the system of scientific naming of organisms. What is this system called? State its importance. Some scientific names are common to the names one normally uses to identify them. Give four examples. Justify the following statements : Availability of proper and sufficient food would prevent from infectious diseases. The general ways of preventing infectioin mostly relate to preventing exposure List three points of prevention of exposure. State Archimedes principle. Why is it easier to swim in sea water than in river water?

6 4 Page 6 of 9 Explain the reason that the cork floats in the water where as an iron nail sinks. With the help of an activity prove that the force acting on a smaller area exerts a larger pressure. /SECTION B (OTBA) (* Please ensure that open text of the given theme is supplied with this question paper.) Theme : Clean India We mean it!! Social harmony and good economic conditions are necessary for good health. Justify this statement. Mention the various resources used in the bio-gas plant in Malappuram Kerala Elaborate on the need for the harvesting of rain water. Discuss in brief the physical arrangements for harvesting. Section C

7 Page 7 of 9 Sound waves can travel : In vacuum In any medium Both in and Only in solid and gaseous medium 6 x0 N x0 Pa m 0.7m 0.m m A force of x0 N exerted by a truck produces a pressure of x0 Pa on the ground. The area of contact of the tyres with ground is : 0.m 0.7m 0.m m A wave passes from one medium to another. Name the property of wave out of the following which varies. Frequency Mass Wavelength Mass and wavelength Identify the division to which the following plant belongs : Bryophyta Pteridophyta Angiospermae Gymnospermae

8 9 Page 8 of 9 In order to verify the law of conservation of container, so that gaseous products do not escape heat transfer does not occur reactants do not mix with the products none of the above mass, we carry out chemical reactions in a closed On heating 60 g of Calcium carbonate 6.4 g of carbon dioxide escapes. What will be the amount of residue left?.6 g.6 g 86.4 g 6.4 g Leaves of monocotyledonous plants often have : cambium present dorsiventral leaves floral parts in units of four or five parallel venation I II Seeds III IV I III I IV II III II IV Leaf

9 Page 9 of 9 Identify monocotyledonous from the given sketches : I and III II and III 4 6 I and IV II and IV Which of the following statement is correct in respect of life cycle of Anopheles mosquito? The larvae feed on human blood. Pupae feed on sugar meals. Male anopheles mosquito feeds on human blood. Female anopheles mosquito feeds on human blood. I II SI Seeds Define density and write an expression for it. What is the S I unit of density? III IV When an object is kept on a liquid, then two forces act on it. Name the two forces and their directions. Out of the following given names of the specimens which is known as "farmer's friend". Write its two adaptive features Cockroach, Earthworm, Fish, Bird, -o0o0o0o- Leaf

SUMMATIVE ASSESSMENT II ( ) ( ) SCIENCE / Class IX / IX

SUMMATIVE ASSESSMENT II ( ) ( ) SCIENCE / Class IX / IX E7WE8J II SUMMATIVE ASSESSMENT II (06-7) (0-6) SCIENCE / Class IX / IX 90 Time allowed: hours Maximum Marks: 90 (i) (ii) (iii) (iv) (v) 4 0 (vi) 6 6 0 (vii) 7 70 (viii) 4 4 (ix) (x) 4 6 0 General Instructions