Life Cycle of a Star

What is the first stage in the life cycle of a star?

• main sequence

• white dwarf

• supernova

• protostar

During which stage does a star spend the majority of its life?

• protostar

• main sequence

• white dwarf

• red giant

Tags

NGSS.HS-ESS1-1

What happens to a star during the Red Giant phase?

• It remains the same size and brightness.

• It expands and becomes larger and brighter.

• It shrinks and becomes smaller and dimmer.

• It collapses and becomes a black hole.

What is the final explosive stage in the life cycle of a massive star?

• nebula

• white dwarf

• black hole

• supernova

What is left behind after a supernova explosion?

• comet

• red giant

• white dwarf

• neutron star or black hole

What is the term used for a star in the early stage of its formation?

• protostar

• earlystar

• neostar

• prestar

What is the main sequence stage of a star characterized by?

• Formation of a protostar

• Explosion of a supernova

• Stable nuclear fusion of hydrogen into helium

• Absence of nuclear fusion

Tags

NGSS.HS-ESS1-1

What causes a star to become a Red Giant?

• Exhaustion of core hydrogen fuel and burning of helium in the core

• Absorption of cosmic dust

• Nuclear fusion of hydrogen in the core

• Decrease in gravitational pull

What happens to a star after the Red Giant phase?

• Supernova

• Planetary Nebula

• Black hole

• White dwarf

What is a White Dwarf?

• A white dwarf is a type of exotic animal found in the rainforests.

• A white dwarf is a term used to describe a bright star in the night sky.

• A white dwarf is a type of cloud formation in the Earth's atmosphere.

• A white dwarf is the remnant of a low to medium mass star that has exhausted its nuclear fuel.

Tags

NGSS.HS-ESS1-3