(d) Trojan. 144) What is the HOTTEST region of the sun? (a) Planets Whereas, the standard theory of big bang nucleosynthesis explains the observed abundance of light elements (H, He, and Li) only if the present density of ordinary (baryonic) matter is … 125) Of the following, which is the only planet which CANNOT be seen with the unaided eye? 134) Which of the following planets is NOT a terrestrial planet? Earth’s atmosphere not only contains the air that we breathe but also protects it from the blasts of meteors that are constantly being hurtled towards it. Does it mean Process of Nature: – Solar and Lunar Eclipses, Rotation and Revolution, Weather Variables (Global Temperature, Pressure, Circulation, Precipitation, Humidity) and Weather Variations. The Universe in four dimensions. Answer: (b) (function() { About 73% of the Sun’s mass is hydrogen, and another 25% is helium. 103) The LAST manned moon flight was made in what year? Origin of Universe Theories: 1. platform for all CSS aspirants. (a) Retrograde 145) The same side of the moon always faces the Earth because: The search for the hidden structure of the universe will in all likelihood never end. (b) diameter of the objective This was an important piece of supporting evidence for the Big Bang theory… (c) 1973 (d) 1974 111) The comet known as Halley’s Comet has an average period of: The mass that can't be seen is called dark matter. (a) 1492 (b) 1611 (a) focal ratio Amazing Space is a set of web-based activities primarily designed for classroom use, but made available for all to enjoy. … (a) Earth (b) the process of moon formation for planets. The term terrestrial planet is derived from the Latin “Terra” (i.e. Our universe is vast and getting larger every day, but humanity's understanding of the cosmos is growing too. Answer: (b), 118) The Pythagoreans appear to have been the first to have taught that the Earth is: (c) the bottom of the tube In astronomy, an astronomical unit is defined as the average distance from the Sun to the Earth, or about 150 million kilometers (93 million miles). (c) Opcentric (b) Kepler and Galileo in 1604. The last manned landing Apollo 17 on the Moon to date, which took place on December 11, 1972, was made by Commander Eugene Cernan and lunar module pilot Harrison Schmitt who was also the first scientist on the Moon. (c) Neptune The Composition of the Universe . (b) Juno. (c) The Sagittarius Constellation (d) nuclear fission 2. The remainder is made up of poorly understood substances: dark energy (73%) and dark matter (23%). A study published in 2012 in Nature Communications by researchers at Northumbria University found a possible mechanism that causes some stars to have a corona that is almost 200 times hotter than their photosphere (the star’s surface). Earth’s atmosphere not only contains the air that we breathe but also protects it from the blasts of meteors that are constantly being hurtled towards it. Composition of the Sun’s Atmosphere. A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the Earth’s atmosphere and impact with the Earth’s surface. [/caption]The large-scale structure of the Universe is made up of voids and filaments, that can be broken down into superclusters, clusters, galaxy groups, and subsequently into galaxies. (d) solstice. Science Restated: Physics and Chemistry for the Non-Scientist 1970, Forensic Science Fundamentals & Investigation 2008, Harm J. de Blij, Peter O. Muller, James E. Burt, Joseph A. Mason, Physical Geography-Science and Systems of the Human Environment 2009, Introduction to Information Technology 2005, Michael L. McKinney, Robert Schoch and Logan Yonavjak, William P. Cunningham, Barbara Woodworth Saigo. (a) the moon is not rotating about its axis. This video will provide you an understanding of the structure and composition of the universe. (a) Neutron star. (a) oxygen (c) hyperbolas The Law of Orbits: All planets move in elliptical orbits, with the sun at one focus. The totality of everything that exists or is known to exist is called universe. By observing ultraviolet light from a distant quasar, which would otherwise have been absorbed by the Earth’s atmosphere, they found the long-sought signature of helium in the early Universe. The corona does not have an upper limit. (b) blue star. 131) On the celestial sphere, the annual path of the Sun is called (c) Earth and Mars (b) charged particles trapped in the Earth’s magnetic field. (c) mixtures of gases Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind. In short, the conventional picture of a universe with numbers of elementary particles, controlled and mediated by a set of force fields, is not really an accurate picture of the universe, given our present-day known structure of physical laws (quantum field theory and general relativity). Answer: (b), 117) Geocentric means around: 136) A star like object with a very large red shift is a, 137) The apparent magnitude of an object in the sky describes its, 139) A coordinate system based on the ecliptic system is especially useful for the studies of. what is preposition? The ice giant Neptune was the first planet located through mathematical predictions rather than through regular observations of the sky. The change in the axis location changes the dates of perihelion (closest distance from sun) and aphelion (farthest distance from sun), and this increases the seasonal contrast in one hemisphere while decreasing it in the other hemisphere ( Kaufman, 2002). (c) The chromospheres The mantle is hot and represents about 68 percent of Earth’s mass. (a) change from night to day. (d) Supernova. How have present structures arisen ?-- the dimensionality of space-time -- the standard model of particle physics -- the periodic table/element abundances (c) 76 years Siphons will not work in the International Space Station where there is air but no gravity, but neither will they work on the Moon where there is gravity but no air, 120) Of the following colors, which is bent least in passing through aprism? (a) hydrogen and oxygen combustion Answer: (b) Cosmology is the branch of astronomy involving the origin and evolution of the universe, from the Big Bang to today and on into the future. 5000 years ago the North Star was Thuban in the constellation Draco. (c) caused by the reflection of polar snow. The Universe is vast. Processes of Nature —Solar and Lunar Eclipses Day and Night and their variation. The atmosphere of Mars is about 100 times thinner than Earth’s, and it is 95 percent carbon dioxide. Is it: 134) Which of the following planets is NOT a terrestrial planet? Answer: (c) 106) A pulsar is actually a: Answer: (b) Energy :- sources and resources of Energy Energy conservation. CSS | Syllabus | Past Papers | Solved Papers | Preparation ... Time Allowed: 3 hours. NASA.gov brings you the latest images, videos and news from America's space agency. It is invisible to the naked eye because of its extreme distance from Earth. (d) the moon’s magnetic poles keep aligned with the Earth’s magnetic field. Comet Halley was visible in 1910 and again in 1986. Energy :- sources and resources of Energy Energy conservation. Cold Dark Matter: ~25% This is the so-called "missing mass" of the universe. 139) A coordinate system based on the ecliptic system is especially useful for the studies of Composition of universe and cosmos structure labeled vector illustration.. Answer: (b) (b) Stars Answer: (b). (d) fixed star. Constituents and Structure:-Universe, Galaxy, Light Year, Solar System, Sun, Earth, Astronomical System of Units. The Crab Nebula spans about 10 light-years. (c) super nova remnant (d) gravity Structure and Composition of the Earth’s Atmosphere Earth is the only planet in the solar system with an atmosphere that can sustain life as we know it. They can wax and wane in response to incoming energy from the sun, sometimes swelling up enough to expose satellites in low-Earth orbit to damaging radiation. From its privileged position above the Earth’s atmosphere Hubble has been able to contribute significantly to this area of research. Part-I (General Science) 60 Marks. Each declaration includes a CSS property name and a value, separated by a colon. It is the planets, galaxies, gas clouds, and clusters. ii) A head or round coma that surrounds the centre and consists of dust particles mixed with frozen water, frozen methane and frozen water, frozen methane and frozen ammonia. (b) White Dwarf The CSS Point is the Pakistan 1st Free Online The ecliptic is an imaginary line on the sky that marks the annual path of the sun. (a) 300 (b) 1,000 What laws govern its evolution ? (a) Earth (b) the moon’s motion was fixed at its creation by the laws of inertia. The