Question
Which stages do all stars have in common in their life cycles?(1 point)
Responses
black hole
black hole
nebula
nebula
protostar
protostar
white dwarf
white dwarf
None of the given options are correct. All stars go through the following stages in their life cycles:
1) Nebula: A cloud of gas and dust in space.
2) Protostar: The nebula collapses under gravity and becomes a dense, hot object.
3) Main Sequence: The protostar becomes a stable star and fuses hydrogen into helium in its core.
4) Red Giant (for stars like the Sun): As the hydrogen fuel runs out, the core contracts and the outer layers expand and cool.
5) Planetary Nebula (for stars like the Sun): The outer layers of the red giant are ejected, leaving a hot core.
6) White Dwarf: The remaining core of a low to medium mass star, which slowly cools over billions of years.
7) Supernova (for high mass stars): The core of the star collapses and undergoes a violent explosion.
8) Neutron Star or Black Hole: Depending on the mass of the core, it can collapse into either a neutron star or a black hole.
So, the correct answer would be "None of the above".
All stars have the following stages in common in their life cycles:
1. Nebula: Stars are born from giant clouds of gas and dust called nebulae. These nebulae collapse under their own gravity and start the process of forming a star.
2. Protostar: As the gas and dust in the nebula collapses, it forms a dense core known as a protostar. The protostar continues to gather mass from the surrounding material.
3. Main Sequence: The protostar reaches a point where it starts undergoing nuclear fusion, which is the process of converting hydrogen into helium. This stage is known as the main sequence, and it is the longest stage in a star's life cycle.
4. Red Giant or Supergiant: Eventually, the hydrogen fuel in the core of the star begins to run out. The star swells up and becomes a red giant or supergiant, depending on its mass.
5. Planetary Nebula or Supernova: Depending on the mass of the star, it will either shed its outer layers and form a planetary nebula, leaving behind a dense core called a white dwarf, or it will undergo a supernova explosion, leaving behind a neutron star or a black hole.
Therefore, the stages that all stars have in common in their life cycles are nebula, protostar, and a final stage that can either be a white dwarf, neutron star, or black hole.