Midterm 4 Stars: Question Preview (ID: 9233)


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What chracteristics are shown on the Hertzsprung Russell Diagram?
a) temperature and luminosity
b) shape and color
c) distance and mass
d) size and age

How would a hot star with low luminosity be classified?
a) white dwarf
b) protostar
c) double star
d) red giant

Who is credited with the nebular hypthesis?
a) LePlace
b) Newton
c) Hertzsprung
d) Kepler

What determines the lifespan of a star?
a) mass
b) brightness
c) temperature
d) size

What is produced when a dying giant or supergiant explodes?
a) supernova
b) quasar
c) double star
d) protostar

What is a rotating cloud of dust and gas that becones a star?
a) nebula
b) planeteimal
c) protostar
d) nova

What caused the solar nebula to condense to form the sun?
a) energy from collisions and pressure from density
b) enegy and heat from fusion
c) rotation and revolution
d) energy from high temperatures and pressure from gravity

What is produced in all phases of fusion in a star's core?
a) energy
b) hydrogen
c) protons
d) neutrons

What do all stars begin as?
a) nebula
b) protostars
c) planetesimals
d) black holes

Describe the temperature and luminosity of the sun on the Hertzsprung Russell Diagram.
a) medium temperature and medium luminosity
b) hot and dim
c) cool and dim
d) hot and bright

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