STARS

Multiple Choice

Which of the following is NOT a stage in the life cycle of a star?

• Protostar

• Red giant

• Black hole

• Comet

Multiple Choice

Which of the following is the correct sequence in the life cycle of a sun-like star?

• Protostar → Sun-like star → Red giant → Planetary nebula → White dwarf

• Protostar → Massive star → Supernova → Black hole

• Protostar → Red supergiant → Neutron star → Interstellar gases

• Protostar → Sun-like star → Red supergiant → Black hole

Multiple Select

Which of the following stages are present in both the general life cycle of a star and the life cycle of the Sun?

• Protostar

• Red giant

• Planetary nebula

• White dwarf

Open Ended

Explain how the life cycle of the Sun is represented using the images from the picture bank. What does each stage signify about the Sun's evolution?

Fill in the Blanks

A star’s temperature is related to its

, the amount of energy it emits from its surface.

Multiple Choice

Which of the following types of stars are found in the main sequence region of the Hertzsprung-Russell diagram?

• White dwarfs

• Giants

• Supergiants

• Sun-like stars

Open Ended

What information does the Hertzsprung-Russell diagram provide about stars, and how can it be used to compare and classify them?

Open Ended

Explain how the H-R diagram helps astronomers classify stars into different groups. Provide examples from the diagram.

Multiple Choice

Which type of star is represented by region D on the H-R diagram?

• Supergiants

• Giants

• Main-sequence

• White dwarfs

Fill in the Blanks

A Hertzsprung-Russell diagram is a graph of stars with temperature on the x-axis and

on the y-axis.

Multiple Select

Select all the correct statements about the H-R diagram.

• Most stars fall within the main sequence region.

• The y-axis of the H-R diagram represents luminosity.

• The surface temperature of most stars increases as their luminosity increases.

• The x-axis of the H-R diagram represents color.

Open Ended

Compare the life cycle of the sun with that of a more massive star outside the main sequence. What are the key differences in their life cycles?

Fill in the Blanks

Fill in the blank: After a supernova, a massive star can become a

or a black hole.

Open Ended

Reflecting on what you learned today, how would you explain the importance of the Hertzsprung-Russell diagram in understanding stars?