1) It is the process by which star changes over a course of time. a) Stellar Census b) Stellar Birth c) Stellar Evolution d) Stellar Death 2) Stars with around ten or more times the mass of the Sun can explode in a supernova as their inert iron cores collapse into an extremely dense neutron star or black hole. a) True b) False c) None of the above 3) The central temperature of the contracting protostar is ___________ where nuclear reactions begin. a) Increase to the point b) Decrease to the point c) Remain constant d) None of the above 4) What characteristic of a star is the total amount of energy at all wavelengths that it emits per second? a) Luminosity b) Apparent Brightness c) Magnitude d) Color 5) __________ is a human measurement, and it would change for each star if the measurement were taken from another location. a) Luminosity b) Apparent Brightness c) Absolute Brightness d) Color 6) _________ is an older system of measuring the amount of light we receive from a star or other luminous object. a) Luminosity b) Apparent Brightness c) Absolute Brightness d) Magnitude 7) Stars that appear_____ are not necessarily very close to us, and those appearing faint are not necessarily very distant from us. a) Very bright b) Very dark c) Very dim d) Very cloudy 8) Stars that appear brightest to our eyes are bright primarily because a) They are the closest to us b) They are intrinsically very luminous c) They are intrinsically so faint d) They are large 9) Distance can be measured by a) Parallax b) Use binary star systems c) Use Kepler’s 3rd law (Newton Version) to determine M1+M2 d) None of the above 10) At some point the _______ runs out of fuel and the ________ begins to die? a) Star; Gases b) Gas; Nuclear reaction c) Nuclear reaction; White dwarf d) Nuclear reaction; Star 11) Where are stars "born"? a) From the sun b) In a nebula c) In a supernova d) In a white dwarf 12) A star that has ignited and has used up all of the hydrogen is called? a) Neutron Star b) White Dwarfs c) Red Giants d) Black Holes 13) It is the process by which star changes over a course of time. a) Star metamorphosis b) Stellar metamorphosis c) Star evolution d) Stellar evolution 14) Which of the following stellar life cycle is correct? a) Main sequence, birth, old age, remnant, death b) Birth, main sequence, old age, remanant, death. c) Birth, main sequence, old age, death, remnant. d) Main sequence, birth, old age, death, remnant. 15) ____________ powers a star for most of its existence. a) Nuclear fission b) Nuclear integration. c) Nuclear fusion. d) Nuclear permutation.

ASTRONOMY - GROUP III

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