Conceptual Physical Science (6th Edition)

Chapter 28

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Stars appear to be fixed. The sun, moon and ... more

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The rotation of the stars around the planet and ... more

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The yearly motion is not visible with the Moon as ... more

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Blue, as it has higher surface temperature. ; The ... more

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All the main sequence stars generate energy ... more

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No, giants are highly luminous because of their ... more

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The physical size of the star is provided by the ... more

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The size of the star depends on the thermonuclear ... more

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Stars do not undergo multiple supernova because ... more

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No change. ; Since there is no change in the ... more

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The mass of a star determines the final fate of ... more

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Yes. ; Two galaxies can collide to form into one ... more

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No. ; All quasars are billions of light year away ... more

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The number of stars in our galaxy is approximately... more

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A group of stars in a certain pattern over a large... more

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Due to the changing nighttime sky over the seasons... more

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This is because the Earth completes a full ... more

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Distance ; Light year is a unit of astronomical ... more

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Blue star is hotter than red star. ; The frequency... more

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 The measure of the brightness of a star with ... more

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It is a plot showing luminosity versus surface ... more

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They are plotted on the band that diagonally ... more

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Our Sun is roughly in the middle of the main ... more

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Yellow stars ; Yellow stars are larger as they ... more

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The ignition of nuclear fuel and subsequent ... more

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The outward forces acting on the star are the ... more

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In the case of stars, gravitational force is the ... more

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Billions of years. ; After billions of years, the ... more

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High-mass stars have lower lifetime. In high ... more

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All heavy elements in the universe were created ... more

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The super dense neutron core that remains after ... more

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A pulsar is a rapidly rotating neutron star which ... more

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Black hole is the final fate of a supergiant star ... more

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Stars like the Sun just aren't massive enough to ... more

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Black holes are formed on explosion of a ... more

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Blacholes have high gravitational attractive force... more

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A mathematical boundary. ; The event horizon is ... more

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Spiral galaxy. ; Milky way is a disc shaped galaxy... more

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Collision can trigger the formation of new stars. ... more

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A galaxy in which the formation of star is very ... more

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Quasars are more than hundred times brighter than ... more

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Two. ; The are two spiral galaxies in the Local ... more

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Local Group is a large cluster of galaxies. ; The ... more

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Local Group, Eridanus Cluster and Virgo Cluster ; more

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It will move in the west direction. When the sun ... more

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Due to the revolution of the Earth, the ... more

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Star A will have more apparent brightness than ... more

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; Let d be the distance from EarthTherefore ; Let... more

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; Let be the radius of the spiral galaxySince ... more

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; Let the surface area be denoted as S. ; Let, D ... more

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; Let be the surface area density ; Given ; more

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Yes it is possible. ; If the stars have enough ... more

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As Florida is far away from the north pole, it ... more

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The north star is the farthest to earth therefore ... more

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Star C has the lowest luminosity therefore is a ... more

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Red giant is the first stage of evolution. ; White... more

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The star initially consumes the hydrogen gas and ... more

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Singularity is the place where the blackhole ... more

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The Solar System is the gravitationally bound ... more

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Constellations are used in the Greek mythology for... more

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Except the Sun, no other star is visible in the ... more

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There's no atmosphere on the moon to block out the... more

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Figure 34.2 ; Due to the revolution of the planet ... more

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The constellation of stars when viewed from the ... more

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Diurnal motion is the everyday repeated motion of ... more

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The sun moves a little faster than the moon. After... more

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One day. It changes position due to the rotation ... more

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Earth orbits around the sun. This motion is the ... more

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Daily motion due to the rotation of Earth.Yearly ... more

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The surface temperature,size, and age of the star... more

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Blue colored star ; Blue has the minimum ... more

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Human eyes cannot eye ultraviolet colour. ; ... more

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No. ; Blue light is emited by stars with higher ... more

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No. ; Blue light is emited by stars with higher ... more

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The energy of the protostar is primarily ... more

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The sun's continued heating and expansion will ... more

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H-R diagram is a plot between luminosity versus ... more

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The color of the sun would change to dark color ... more

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The fuel is burned slower rate in low mass stars ... more

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A star at the end of its life cycle, sheds its ... more

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The outward and inward forces on a star determines... more

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Mass transfer from a companion star can cause a ... more

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When the hydrogen nuclei of a protostar starts to ... more

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The sun will have no more hydrogen atoms to ... more

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A star burns out when a significant portion of the... more

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Almost every element on Earth was formed at the ... more

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When a star explodes, the high energy fuses these ... more

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Metals will be more abundant in new stars, because... more

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The size is not that huge, and huge stars are ... more

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Stars with fewer elements will be older than the ... more

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Beyond the lower limit, the star cannot generate ... more

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The hydrostatic equilibrium between the ... more

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The temperature and pressure present on the outer ... more

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Lower mass burns their fuel at a slower time than ... more

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Giant and super-giant stars have very short ... more

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Only massive stars have mass more than the sun can... more

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Heavier elements are formed during the supernovae ... more

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The bigger stars die quickly. ; Lower mass stars ... more

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When a star collapses, the distance between ... more

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Increases. ; The diameter of the event horizon is ... more

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The photon sphere is further out from the black ... more

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Sun will neither become a black hole nor a ... more

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Black hole's event horizon. ; A black hole forms ... more

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The variance of inward pulling force is high, ... more

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Not clearly identifiable. ; As the  nearby ... more

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During the formation of a supermassive black hole ... more

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No. ; Though it possesses a massive black hole at ... more

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GalaxyForestIt consists of large numbers of stars... more

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GalaxySwamp of MosquitoesA large number of ... more

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AstronomyAstrologyScientific approach.Pseudo ... more

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No navigation, no agriculture, and no season ... more

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An observer falling into a black hole has a ... more

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To understand and appreciate the balance in the ... more

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Due to the daily motion of the Earth, the ... more

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It remains stationary as it is close to the Earth'... more

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Closest star to the sun. ; Compared to the light ... more

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It determines the energy each star can produce ... more

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Sustainable thermonuclear fusion can be achieved, ... more

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Stars are everywhere beyond and around the sun, ... more

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After the sun becomes a red giant, it uses Helium ... more

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The black hole is not just an empty region with ... more

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The elliptical shape is attained by the starburst ... more

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Many of the objects in the universe are older than... more

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