NATIONAL ASTRONOMY & SCIENCE OLYMPIAD. Duration : 60 Minutes Max Marks : 50 GENRAL INSTRUCTIONS

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1 CLASS NATIONAL ASTRONOMY & SCIENCE OLYMPIAD 9 Duration : 60 Minutes Max Marks : 50 GENRAL INSTRUCTIONS 1. Please collect the Answer Sheets (OMR) from the invigilator. 2. Please Write your Student ID, Name, Class, and School Name on the OMR Sheet. 3. This question paper contains 50 Questions, duration is 60 minutes. 4. Answer all the questions in OMR sheet only. And please do sign on it. 5. Use only Black or Blue Ball Point Pen to answer the question in OMR sheet. 6. Indicate the correct answer by darkening on the 4 responses provided. 7. After successful completion of the test please submit the OMR answer sheet to the invigilator. SECTION-I 1. A student wishes to measure accurately the volume of approximately 40 cm3 of water. She has two measuring cylinders, a larger one that can hold 100 cm3, and a smaller one that can hold 50 cm3. The water forms a meniscus where it touches the glass. Which cylinder should the student use and which water level should she use to ensure an accurate result? NASO-2016 NATIONAL ASTRONOMY & SCIENCE OLYMPIAD 1

2 2. A plane lamina with centre of mass X touches the ground at point P. Which diagram shows the lamina in equilibrium? 3. A student adds weights to an elastic cord. He measures the length of the cord for each weight. He then plots a graph from the results, as shown. What has he plotted on the vertical axis? a- Measured length b- Original length c- (Measured length + original length) d- (Measured length original length) 4. The science of rocketry relies on a basic physics principle: For every action. a. Forces will remain constant b. There is an equal and opposite reaction c. Distance and speed will b e increased d. There is a reason to overcome gravity 5. A telephone engineer connects a wire between two poles when the weather is very cold. He makes the wire very loose. The wire passes over a road. The weather changes and it becomes very hot. What could happen to the wire and why? 6. The diagram shows a heater above a thermometer. The thermometer bulb is in the position shown. Which row shows how the heat energy from the heater reaches the thermometer bulb? NASO-2016 NATIONAL ASTRONOMY & SCIENCE OLYMPIAD 2

3 7. Scout P signals to scout Q on other side of a valley by using a mirror to reflect the Sun s rays. Which mirror position would allow the Sun s rays to be reflected to scout Q? 8. While you are cooking with the hot plate and toasting a slice of bread, the electric heaters start. Almost immediately, the hot plate, toaster, and electric heaters quit working. This most likely happened because. a. A fuse in the toaster burned out b. A circuit breaker in the electrical panel tripped c. The element in the hot plate burned out d. The circuit breakers in the electric heaters tripper 9. The maintenance supervisor sketches a graph showing the viscosity of different motor oils at C.? Viscosity at 20 0 C 60 SAE values on Y axis oil 1 oil 2 oil 3 oil 4 To ensure ease of starting, the type of motor oil that should be used in the truck s engine in extreme cold is: a. SAE 5 c. SAE 10 b. SAE 30 d. SAE Which energy transfer takes place when a matchstick burns? a. Chemical to thermal b. Chemical to nuclear c. Nuclear to chemical d. Thermal to chemical NASO-2016 NATIONAL ASTRONOMY & SCIENCE OLYMPIAD 3

4 11. In a movie, scuba divers must swim to the base of a dam to retrieve stolen gems. Which of the following graphs represents the relationship between the depth of the water and the water pressure behind the dam? A B C D 12. To study the effects of a campsite on the soil, soil samples were collected from four different sites in a camp area before the camp was set up, during the project, and after the campsite was removed. This table shows the ph data that was measured. Site Before During After You conclude that the activities at the campsite caused the soil to become: a. Neutral b. More basic c. More acidic d. Polluted 13. At the end of the day, you have a hot drink from your thermos. A cross section of the thermos is shown below. Which of the following statements best explains why the drink remains hot in the thermos? a. Air is a good conductor of heat. b. A vacuum is a poor conductor of heat. c. Plastic does not conduct heat well. d. Shiny surfaces do not reflect heat well. 14. One chlorine atom can destroy ozone molecules. Chlorine is created in the upper atmosphere by our use of a. Chlorofluorocarbons. b. Carbonated soft drinks. d. Water treatment plants c. Sodium chloride- NaCl NASO-2016 NATIONAL ASTRONOMY & SCIENCE OLYMPIAD 4

5 15. The drawings below represent models of molecules of chemical compounds. Which diagrams represent the chemical formulae for the molecules C2H2 and CH4 respectively? a. 1 and 2 b. 3 and 4 c. 2 and 3 d. 1 and A small boat in a harbour is protected from waves on the sea by harbour walls? Some waves can curve round the harbour walls and reach the boat. What is the name of this effect? a. Diffraction b. Dispersion c. Reflection d. Refraction 17. The form action of our solar system is based on the.. a. Big bang theory. d. Theory of relativity b. Protoplanet hypothesis. c. Law of Conservation of Mass 18. A ball is dropped on to a hard surface and bounces. It does not bounce all the way back to where it started, and so has not regained all of its original gravitational potential energy. Which statement accounts for the loss of gravitational potential energy? a- Energy was destroyed as the ball hit the ground. b- Energy was destroyed as the ball travelled through the air. c- The chemical energy and elastic energy of the ball have increased. d- The internal (heat) energy of the ball and its surroundings has increased. 19. Which products are formed when limestone is heated? a- Carbon dioxide, lime and oxygen b- Carbon dioxide and lime only c- Carbon dioxide and slaked lime d- Lime and slaked lime 20. The diagram shows the structure of an atom of element X. What is X? a. Boron b. Carbon c. Sodium d. Sulphur NASO-2016 NATIONAL ASTRONOMY & SCIENCE OLYMPIAD 5

6 21. Which substance will not conduct electricity? a. Aluminium c. Copper b. Plastic d. Steel 22. Which acid reacts with ammonia to produce the salt ammonium sulphate? a. Hydrochloric c. Nitric b. Phosphoric d. Sulphuric 23. Why is argon gas used to fill electric lamps? a. It conducts electricity. c. It glows when heated. b. It is less dense than air. d. It is not reactive. 24. The diagram shows some uses of water in the home. For which uses is it important for the water to have been treated? a. 1 only b. 2 only c. 3 only d. 1, 2 and Which statement is not correct? a. Air is a mixture. b. Ammonia is a compound. c. Methane is a compound. d. Sea water is a compound. SECTION-II 26. Which elements were present when the universe was 500 seconds old? a. Hydrogen b. Hydrogen and helium c. All the elements now present d. Only elements heavier than iron 27. A neutron star is typically the size of? a. The Earth's orbit. c. Mercury's orbit. b. The Sun. d. The Earth 28. The distances to stars more luminous and hotter than the Sun are usually found from? a. Parallax c. The Sun b. Brightness. d. Angular size 29. There are three stars which are all at the same distance and are the same size. Star A is 5000 degrees, star B is 8000 degrees and star C is 10,000 degrees. Which is brightest? a. Star C c. Star A b. They are all equally bright. d. Star B 30. Which colour star is likely to be the hottest? a. Red c. Yellow b. Green d. Orange NASO-2016 NATIONAL ASTRONOMY & SCIENCE OLYMPIAD 6

7 31. The surface of Venus has not been seen with telescopes on the Earth due to? a. Interplanetary dust. b. The glare of the nearby Sun. c. The great distance between the Earth and Venus. d. Clouds on Venus. 32. Which giant planet does not have much helium in its atmosphere, probably because it has fallen toward the centre of the planet? a. Saturn c. Neptune b. Uranus. d. Jupiter 33. The most abundant element in the Sun is? a. Carbon c. Hydrogen b. Helium d. Oxygen 34. How big is Mercury compared to other planets? a. Nearly as large as Saturn. c. Twice the diameter of Venus. b. Four times larger diameter than Earth. d. Smaller than Mars 35. The main reason for the pattern of stellar spectral Lines changing from one spectral type to the next is called? a. Composition changes. c. Absolute magnitude changes. b. Temperature changes. d. Diameter changes 36. The objects composed mostly of rock are? a. Jovian planets. c. Comets. b. Asteroids. d. Iron meteorites. 37. Meteors are usually best observed between? a. Sunrise and noon. c. Midnight and sunrise. c. Sunset and midnight. d. Noon and sunset 38. The planets for which the relationship given by Bode's law fails to give the correct orbit size by more than 10% are? a. Uranus and Pluto c. Mars and Neptune b. Pluto and Neptune d. Jupiter and Neptune 39. The planet whose surface looks most like the Moon is? a. Mars c. Earth b. Venus d. Mercury 40. The first person to use the telescope for astronomy was? a. Jack Baldwin c. Tycho Brahe b. Kepler. d. Galileo 41. The conditions for a solar eclipse are? a. First quarter Moon; Moon near ecliptic. c. Moon at new phase; Moon near ecliptic. c. Full Moon; Moon near ecliptic. d. All the above 42. When Venus has reached its maximum eastern elongation from the sun as viewed from the earth, it is visible in the sky a. In opposition to the sun. c. As an evening "star". b. As a morning "star". d. In conjunction with the sun NASO-2016 NATIONAL ASTRONOMY & SCIENCE OLYMPIAD 7

8 43. As seen from the earth, when Jupiter undergoes its retrograde motion, it is the sun in the sky and moving with respect to the stars. a. In conjunction/eastward c. In conjunction/westward b. In opposition/eastward d. In opposition/westward 44. In order to have a solar eclipse, you need to have? a. A full moon. c. A new moon. b. The moon on or close to the ecliptic. d. (B) and (C) 45. One evening, just after sunset, you see Mars, Jupiter, and Saturn spread out across the sky. How could you trace out the rough position of the ecliptic in the sky? a. Draw an imaginary arc through the sunset point and Jupiter. b. Draw an imaginary arc through the sunset point and the three visible planets. c. Wait for the moon to rise later; it lies right on the ecliptic. d. Trace an arc around the horizon below each visible planet. 46. Saturn is rising as the sun sets. a. Always true. c. Sometimes true b. Never true. d. Sometimes False 47. A month after an eclipse of the moon, the moon is full? a. Always true c. Sometimes true b. Never true d. False 48. Which of the following statements about scientific models is false? a. They are testable by observations. b. They use physical ideas to explain phenomena. c. They contain geometrical elements. d. They do not change in the light of new observations. 49. In a basic geocentric model of the cosmos, the daily motion of the sky from east to west was explained by the a. Rotation of the earth from west to east. b. Rotation of all the heavenly spheres from west to east. c. Rotation of all the heavenly spheres from east to west. d. Motion of the sun's sphere yearly from east to west. 50. According to Kepler's first and third laws, a planet positioned between the earth and Venus and orbiting the sun would move? a. More slowly than the earth and retrograde at opposition. b. In a circular orbit and go the fastest when closest to the sun. c. In an elliptical orbit and have an orbital period of less than one year. d. In an elliptical orbit and go the fastest at aphelion. ******ALL THE BEST****** NASO-2016 NATIONAL ASTRONOMY & SCIENCE OLYMPIAD 8