Exploring the Life Cycle of Stars

The video explores the life cycles of stars, from their formation to their eventual demise. It explains how stars are born from gas clouds and how their mass determines their life path. Low-mass stars evolve into red giants and eventually become white dwarfs, while high-mass stars end in spectacular supernovae, leaving behind neutron stars or black holes. The video also touches on the creation of elements in stars and the significance of supernovae in the universe.

What is the primary factor that determines the path a star will follow during its lifetime?

• Its mass

• Its temperature

• Its luminosity

• Its distance from Earth

What is the smallest mass required for a gas cloud to trigger nuclear fusion and become a star?

• Thirteen Jupiter masses

• Twenty Jupiter masses

• Ten Jupiter masses

• One Jupiter mass

What happens to a low-mass star when it runs out of hydrogen in its core?

• It becomes a red giant

• It becomes a black hole

• It remains the same

• It explodes as a supernova

What is the final stage of a low-mass star's life cycle?

• White dwarf

• Supernova

• Neutron star

• Red giant

What is the heaviest element that can be fused within a star?

• Carbon

• Oxygen

• Iron

• Silicon

What event triggers the explosion of a high-mass star?

• Collapse of the iron core

• Fusion of hydrogen

• Formation of a red giant

• Formation of a white dwarf

What is left behind after a supernova if the core is between 1.4 and 3 solar masses?

• Red giant

• Black hole

• Neutron star

• White dwarf

What is the Chandrasekhar limit?

• The maximum mass of a white dwarf

• The minimum mass of a black hole

• The mass of the sun

• The mass required for a supernova

What happens to a star's core if it is above 3 solar masses after a supernova?

• It becomes a black hole

• It becomes a neutron star

• It becomes a white dwarf

• It remains the same

Why are black holes considered fascinating objects in the universe?

• They are easy to observe

• They are the largest objects

• They have infinite density and warp spacetime

• They are the brightest objects