Stars and Their Life Cycle Quiz

What is a star?

• A small rocky planet

• A huge sphere of plasma held together by its own gravity

• A large cloud of gases in space

• A type of galaxy

What process must an astronomical object perform to be considered a star?

• Nuclear fission

• Nuclear fusion

• Chemical reaction

• Radioactive decay

What is a nebula?

• A type of star system

• A small rocky planet

• An incredibly large cloud of gases in space

• A type of galaxy

What is the closest star system to us?

• Proxima Centauri

• Alpha Centauri

• Betelgeuse

• Sirius

What is the outermost layer of a star called?

• Photosphere

• Radiative zone

• Core

• Corona

What is the core of a star?

• The layer with high temperature plasmas

• The area in which energy radiates outward from the core

• The visible surface of the star

• The only area hot and dense enough for nuclear fusion to occur

What is the life cycle of a low mass star?

• It becomes a neutron star

• It becomes a black hole

• It becomes a white dwarf

• It becomes a red giant

What is the life cycle of an average mass star?

• It becomes a red giant

• It becomes a black hole

• It becomes a white dwarf

• It becomes a neutron star

What is the life cycle of a high mass star?

• It becomes a black hole

• It becomes a red giant

• It becomes a white dwarf

• It becomes a neutron star

What is the force that holds a star together?

• Electromagnetic force

• Weak nuclear force

• Gravity

• Strong nuclear force