The Life Cycle of a Star

What is a nebula?

• A solar system

• A region filled with interstellar dust and gas

• A planet

• A star

Describe the main sequence stage of a star.

• It is a brief period before the star quickly becomes a red giant.

• It is a stable phase where hydrogen fusion in the core occurs, producing energy that makes it shine. The longest phase of a star's life.

• It is the phase when the star burns primarily helium.

• It is the stage when a star explodes in a supernova.

Tags

NGSS.HS-ESS1-1

What happens when a star runs out of hydrogen?

• It expands to become a red giant

• It collapses immediately into a black hole

• It becomes a supernova

• It remains the same

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NGSS.HS-ESS1-1

Differentiate between a red giant and a supergiant: choose the correct key difference.

• A red giant has lower mass compared to a supergiant.

• A red giant is more luminous than a supergiant.

• A red giant is younger than a supergiant.

• A red giant is hotter than a supergiant.

A supernova is:

• a powerful explosion of a star

• a planet

• a comet

• a black hole

Tags

NGSS.HS-ESS1-3

The difference between a neutron star and a black hole is:

• A neutron star is an extremely dense remnant of a supernova explosion made primarily of neutrons, while a black hole is a region in space with such strong gravitational pull that nothing, not even light, can escape from it.

• A neutron star and a black hole are identical objects with only different names.

• Both are types of planets found in outer space with unique atmospheres.

• There is no fundamental difference between a neutron star and a black hole.

What will happen to the Sun when it reaches the end of its life cycle?

• It will expand into a red giant and then become a white dwarf.

• It will explode into a supernova and form a neutron star.

• It will collapse directly into a black hole.

• It will remain unchanged as a main sequence star.

Tags

NGSS.HS-ESS1-1

Draw and label the life cycle of a star, including the following stages: Nebula, Protostar, Main Sequence, Red Giant/Supergiant, Supernova, Neutron Star/Black Hole, White Dwarf.

Tags

NGSS.HS-ESS1-3