Life Cycle and Characteristics of Stars

What does the stem, "proto" mean?

• Star

• Birth

• First

• Powerful

A star officially becomes a star when this process occurs:

• Nuclear Fusion

• Nuclear Fission

• Galactic Subfugation

• Stellar Generation

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What is the main force that acts on an interstellar cloud/nebula?

• Heat

• Inertia

• Expansion

• Gravity

Tags

NGSS.HS-PS2-4

What things are needed for a star to form?

• Dust, Hydrogen, and Gravity

• Gas

• Hydrogen and Helium

• Dust and Gravity

A star will spend 90% of its life in this stage:

• Red Giant

• Main Sequence

• Protostar

• Interstellar Cloud

Once a star runs out of this element, this next stage of the life cycle will begin:

• Carbon

• Hydrogen

• Iron

• Helium

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Once a SMALL/MEDIUM star leaves main sequence it will become:

• Red Giant

• Protostar

• Red Super Giant

• White Dwarf

Tags

NGSS.HS-ESS1-3

Once a LARGE mass star runs out of energy in the supergiant phase, it enters this stage of the life cycle:

• Black Hole

• Neutron Star

• Supernova

• Main Sequence

Once the outer layers of a small/medium mass star are released during this stage, the core of the star is left behind which brings us to this stage of the life cycle:

• Black Dwarf

• Neutron Star

• Main Sequence Star

• White Dwarf

What is the biggest determining factor for the path a star will take in its life cycle?

• Color

• Distance

• Temperature

• Mass