Stellar Evolution

What is the source of energy for the Sun?

• nuclear fusion

• burning coal

• burning of solar gases

• splitting of atoms

Tags

NGSS.HS-ESS1-1

______ is a force that causes dust particles to stick together in a nebula.

• nuclear fusion

• gravity

• hydrogen

• iron

Tags

NGSS.HS-PS2-4

Which of the following stars are near the end of their life cycle?

• Main sequence

• White dwarfs

• Giants

• Supergiants

Answer explanation

White dwarfs are stars that have exhausted all of their nuclear fuel.

Tags

NGSS.HS-ESS1-3

Stars like our sun most likely formed directly from a ___________, which is a cloud of dust and gas.

• Protostar

• Nebula

• Main sequence star

• Red giant

Which of the following characteristics determines the life cycle of a star?

• Luminosity

• Temperature

• Color

• Mass

Tags

NGSS.HS-ESS1-1

Our sun's NEXT phase in its life-cycle

• Nebula

• Red supergiant

• Red giant

• Planetary nebula

Tags

NGSS.HS-ESS1-1

True or False: Larger, more massive stars have a LONGER lifespan than smaller less massive stars

• True

• False

Answer explanation

Larger stars burn up their fuel much faster than smaller stars.

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

At what stage in a star's life are elements heavier than iron formed?

• Red Giant

• Supernova

• Blackhole

• Main Sequence

Tags

NGSS.HS-ESS1-3

Using the figure, name the star that is very dim and red in color.

• Barnard's star

• Betelgeuse

• Mira

• Alpha Centauri A

The explosion of a supergiant star is also known as a ___________.

• Neutron star

• Nebula

• Blackhole

• Supernova

Tags

NGSS.HS-ESS1-3