Exploring the Lifecycle of Stars in Astronomy

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

• Main sequence

• Red giant

• Nebula

• White dwarf

What process initiates the production of heat and light in a star?

• Chemical reaction

• Nuclear fusion

• Gravitational contraction

• Magnetic field interaction

Tags

NGSS.HS-ESS1-1

What will our Sun eventually become after the red giant phase?

• White dwarf

• Supernova

• Neutron star

• Black hole

Which of the following is the final stage of a medium to low mass star?

• Black dwarf

• Neutron star

• Supergiant

• Protostar

What is the fate of the highest mass stars?

• Main sequence star

• White dwarf

• Red giant

• Black hole

What is the main sequence in the HR diagram?

• A group of stars that are all white dwarfs

• A group of stars that are all supergiants

• A group of stars in the late stage of their life cycle

• A group of stars in the early stage of their life cycle

Tags

NGSS.HS-ESS1-3

Which axis on the HR diagram represents the surface temperature of stars?

• W-axis

• Z-axis

• X-axis

• Y-axis

Compared to our Sun, which star is more massive but has a lower surface temperature?

• Sirius

• Betelgeuse

• Proxima Centauri

• Barnard's Star

Why does the Sun appear brighter to us than the star Rigel?

• The Sun is more luminous

• The Sun is closer to Earth

• Rigel is a smaller star

• Rigel is a cooler star

What is the cyclic pattern observed in sunspots?

• Every 5 years

• Every 7 years

• Every 15 years

• Every 11 years