Stellar Evolution

Question 1

What does a star’s colour indicate?

Answer 1

–> It’s temperature

Question 2

What is the coldest colour of a star?

Answer 2

–>Red

Question 3

What is the hottest colour of a star?

Answer 3

–>Blue

Question 4

What is the temperature of a red star?

Answer 4

–>3500K

Question 5

What is the temperature of an orange star?

Answer 5

–>5000K

Question 6

What is the temperature of a yellow star?

Answer 6

–>6500K

Question 7

What is the temperature of a blue star?

Answer 7

–>10,000K

Question 8

Describe the evolution of a star of similar mass to the sun?

Answer 8

• -> Nebula
• -> Star(Main sequence)
• ->Red giant
• ->White dwarf

Question 9

Describe the evolution of stars with a mass larger than the sun?

Answer 9

• -> Nebula
• ->Protostar
• ->Main sequence star
• ->Red supergiant
• ->Super giant
• ->Black hole/large star

Question 10

What does the Hertz-Russel Diagram show?

Answer 10

–> The relationship between surface temperature and brightness

Question 11

What is the luminosity of the star?

Answer 11

• -> how much en.in form of light

- ->emmited ev. sec

Question 12

Change in observed frequency and wavelength(moving away)

Answer 12

• ->lower frequency

- ->Longer wavelength

Question 13

Change in observed frequency and wavelength(moving towards)

Answer 13

• ->higher frequency

- ->Smaller wavelength