Astronomy Quiz Flashcards
A nebula is a large cloud of
Gas and dust
All stars start as a..
Nebula
Gravity can pull some dust and gas in a nebula together. The contracting cloud is then called a…
Protostar
A protostar is the ___________ stage of a Stars life
Earliest
How is a star born?
When the gas and dust become so hot in the nebula that nuclear fusion starts
Once a star is “turned on” it is know as a…
Main sequence star
When a main sequence star begins to run out of hydrogen fuel it becomes….
Red giant or red super giant
After a low mass star has become a red giant the outer parts grow bigger and drift into space, forming a cloud of gas called a…
Planetary nebula
The blue-white hot core that is left behind cools and becomes a….
White dwarf
The white dwarf eventually runs out of fuel and dies as a….
Black dwarf
A dying red super giant can suddenly explode. What is this called?
Supernova
After a star explodes, some of the materials from the star are left behind. This material may form a…
Neutron star
Neutron stars are the remains of…
High-mass stars
The most massive stars becomes _______________ when it dies
A blackhole
After a large mass star explodes, a large amount of mass may remain. The gravity of the mass is so strong that gas is pulled inward, pulling more gas into a smaller and smaller space. Eventually the gravity becomes so strong nothing can escape not even_______
Light
