8c: Stellar Evolution

Which is the correct order of star temperature from hottest to coldest

• red
• white
• yellow
• blue

How does a low mass star end its lifecycle?

• Red dwarf
• White dwarf
• Neutron star
• Black hole

How does a high mass star end its lifecycle?

• Red dwarf
• White dwarf
• Neutron star
• Black hole

How does a very high mass star end its lifecycle?

• Red dwarf
• White dwarf
• Neutron star
• Black hole

Define absolute magnitude

• A measurement of brightness
• A measurement of brightness as seen form Earth
• A measurement of brightness at a standard distance
• A measurement of brightness compared to the sun

How is a star is “born”?

• A nebula collapses under gravity, friction causes the temperature of the nebula to increase, starting fusion.
• A nebula collapses under gravity, friction causes the temperature of the nebula to increase, starting fission.
• Hydrogen begins to run out, fusion begins to decrease, the core collapses, pressure increases, the fusion of helium begins
• Helium begins to run out, fusion begins to decrease, the core collapses.

What will happen when a star leaves the main sequence?

• A nebula collapses under gravity, friction causes the temperature of the nebula to increase, starting fusion.
• A nebula collapses under gravity, friction causes the temperature of the nebula to increase, starting fission.
• Hydrogen begins to run out, fusion begins to decrease, the core collapses, pressure increases, the fusion of helium begins
• Helium begins to run out, fusion begins to decrease, the core collapses.

The y-axis of an HR diagram can either be...

• Brightness
• Temperature
• Absolute magnitude
• Colour
• Apparent magnitude

The x-axis of an HR diagram can either be...

• Brightness
• Temperature
• Absolute magnitude
• Colour
• Apparent magnitude

The top left corner of an HR diagram shows a star that is…

• White
• Red
• Bright
• Dim