Lifecycle of Stars

In what stage of a star’s life cycle is External Pressure (Gravity) < Internal Pressure (Nuclear Fusion)?

• Main sequence
• Red Giant
• White Dwarf
• Stellar Nebula

In what stage of a star’s life cycle is External Pressure (Gravity) > Internal Pressure (Nuclear Fusion)?

• Main sequence
• Red Giant
• White Dwarf
• Stellar Nebula

In what stage of a star’s life cycle is External Pressure (Gravity) = Internal Pressure (Nuclear Fusion)?

• Main sequence
• Red Giant
• White Dwarf
• Stellar Nebula

After billions of years go by, a white dwarf will cool into a burnt out cinder. This remnant is known as a(n)… 

• Black dwarf 
•  Dwarf planet
• Black hole
• Brown dwarf

The ejected outer shell of gas formed by an aging star is called a(n)… A. 

• Open Cluster
• Planetary nebula 
• White dwarf
• Galaxy

When a supernova collapses, it can condense (squeeze) electrons and protons together into which type of star?

• Black dwarf 
• White dwarf
• Main sequence 
• Neutron star

.) A small dense star, about the size of a planet, that forms when a low-mass star runs out of nuclear fuel is called a(n)…

• Planetary nebula 
• White dwarf 
• White star 
• Neutron star 

Our sun is currently in which phase of its life cycle?

• Red giant 
• Main sequence
• White dwarf
• Planetary nebula

The most massive stars in the universe are known as …

• Red Giants
• Red Ultragiants 
• Red Supergiants
• White Supergiants

Which of the following is the correct order of the life cycle of our sun?

• main sequence, white dwarf, red giant 
•  main sequence, red giant, white dwarf 
• main sequence, red giant, supernova 
• white dwarf, main sequence, red giant