Life Cycles of Stars Reading and Questions

What determines a star's life cycle?

• Its mass

• Its temperature

• Its size

• Its brightness

Tags

NGSS.HS-ESS1-1

What happens when the hydrogen supply in the core of a star runs out?

• The star explodes

• The star collapses

• The star becomes a red giant

• The core expands

Tags

NGSS.HS-ESS1-1

What is the final phase of a high-mass star's life cycle?

• Collapse of the core

• Creation of heavier elements

• Formation of a black hole

• Supernova explosion

What is the core of a massive star that has more than roughly 3 times the mass of our Sun after a supernova explosion?

• White dwarf

• Black hole

• Neutron star

• Black dwarf

What happens when a star's core contains essentially just iron?

• Fusion in the core ceases

• The star becomes a red giant

• The core collapses

• The star explodes

What is formed when the shock wave encounters material in the outer layers of a star?

• White dwarf

• Neutron star

• Black hole

• Supernova remnant

What produces X-rays and gamma-rays in a supernova explosion?

• Radioactive isotopes

• All of the above

• Hot material

• Leftover core

What is the term for the process of combining protons and neutrons in a star's core?

• Isotope

• Element

• X-ray

• Fusion

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What is the term for a star that has reached the red giant phase?

• Main sequence star

• Protostar

• White dwarf

• Black dwarf

What is the term for a star that has collapsed under its own gravity and attracts any matter and energy that comes near it?

• Black hole

• Neutron star

• Main sequence star

• Protostar