Astronomy final

The majority of stars in our galaxy are

• Blue stars

• Red Giants

• Main sequence

• White Dwarfs

What is the next stage in the life cycle of our Sun?

• main-sequence

• planetary nebula

• black dwarf

• red giant

Tags

NGSS.HS-ESS1-1

What does a star’s color indicate?

• size

• temperature

• age

• shape

What is the source of energy for the Sun?

• fission of hydrogen

• fusion of hydrogen

• fission of helium

• fusion of helium

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

The life cycle of a star is dependent on its

• composition

• size (mass)

• temperature

• location

Tags

NGSS.HS-ESS1-1

What is the constant balance being maintained in the sun?

• the outward pressure of gravity is balanced by the inward pressure of fusion

• fusion

• gravity

• the outward pressure from fusion is balanced by the inward pressure from gravity

Why is a black hole considered to be “black”?

• the force of gravity is so intense not even light can escape

• it has stopped fusion of hydrogen

• it is so small it cannot be seen

• light is only reflected from the event horizon

Tags

NGSS.HS-PS4-3

Using the diagram to the right, determine which star is cooler and many times brighter than Earth’s Sun?

• Barnard’s Star

• Rigel

• Betelgeuse

• Sirius A

Using the diagram to the right, Rigel B, the Sun, and Barnard’s Star are all considered to be

• white dwarfs

• main sequence stars

• red giants

• red super giants

Tags

NGSS.HS-ESS1-3

The H-R diagram shows the relationship between a star’s surface temperature and its

• absolute magnitude

• size

• apparent magnitude

• shape