Life Cycle of Stars

What is the main factor that affects the evolution of a star? 

• Temperature
• Color
• Mass
• Brightness

When is a star born?

• when the nebula starts spinning
• when gas and dust contract
• when X-rays get emitted
• When nuclear fusion starts

Which of the following correctly describes the evolution of a high mass star?

• protostar - main sequence - supergiant - supernova - neutron star
• protostar - main sequence - red giant - planetary nebula - black hole
• protostar - main sequence - supergiant - supernova - white dwarf
• protostar - main sequence - supergiant - supernova

Which is a difference in the life cycle of a high mass star to that of a low/medium mass star?

• protostar
• supernova
• nebula
• explosion

What is a possible end result for a high mass star?

• White Dwarf
• Black Dwarf
• Supergiant
• Neutron Star

What do astronomers expect our sun to do as it runs out of fuel?

• Red Giant - White Dwarf
• Red Giant - Neutron Star
• Red Giant - Black hole
• Supergiant - White Dwarf

All stars start their life as a

• Main Sequence
• Nebula
• Protostar
• Supergiant

When a main sequence star begins to run out of fuel, it

• shrinks
• divides
• expands