Stars and Their Life Cycles
Physics ⇒ Earth and Space Physics
Stars and Their Life Cycles starts at 8 and continues till grade 12.
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See sample questions for grade 10
Describe the difference between a white dwarf and a neutron star.
Describe what happens during a supernova explosion.
Explain what happens to a star like our Sun after it leaves the main sequence stage.
Explain why massive stars have shorter lifespans than smaller stars.
Explain why white dwarfs do not undergo further fusion reactions.
If a star has a mass of 20 times that of the Sun, what is the most likely end product after its death?
A star is observed to have exhausted its hydrogen and is now fusing helium. Which stage is it most likely in?
(1) Main sequence
(2) Red giant
(3) White dwarf
(4) Protostar
If a star has a mass of 20 times that of the Sun, what is the most likely end product after its death?
A star is observed to have exhausted its hydrogen and is now fusing helium. Which stage is it most likely in?
(1) Main sequence
(2) Red giant
(3) White dwarf
(4) Protostar
Which element is primarily fused in the core of a main sequence star like the Sun?
(1) Helium
(2) Hydrogen
(3) Carbon
(4) Oxygen
Which of the following best describes a red giant?
(1) A very hot, small, dense star
(2) A cool, expanded star in the later stage of its life
(3) A star that has just formed
(4) A star that is about to explode
Which of the following best describes a supernova?
(1) The birth of a star
(2) The explosion of a dying massive star
(3) The formation of a nebula
(4) The cooling of a white dwarf
A star spends most of its life in the __________ stage.
A star with a mass less than the Sun will most likely end its life as a __________.
A star with a mass much greater than the Sun will end its life as a __________ or a black hole.
Fill in the blank: The process by which two hydrogen nuclei combine to form helium in a star's core is called __________.
Is it true that only massive stars can become black holes?
Is it true that the heavier elements in the universe are formed in the cores of massive stars and during supernova explosions?
True or False: A neutron star is denser than a white dwarf.
True or False: All stars begin their life as a nebula.
