2. Star Cycle Final Review

What is the name of the gas/dust clouds that form stars?

• Nebula

• Protostar

• Supernova

• Neutron Star

What is the name of the explosion at the death of a massive star?

• Supergiant
• Supernova
• Black Hole
• Nebula

The only objects in our Universe that produces and emits its own light is

• Nebulas
• Comets
• Planets
• Stars

Which stage of its life cycle does a star spend most of its time in?

• nebulae
• red giant
• protostar
• main sequence

______ is a force that causes dust particles to stick together in a nebula.

• nuclear fusion
• gravity
• hydrogen
• friction

The life cycles of stars are determined by their:

• mass (size)
• color
• distance from Earth
• luminosity

Which of these puts the main parts of an average star's life cycle in the correct order?

• nebula>

  main sequence>

  red giant>

  planetary nebula>

  white dwarf

• nebula>

  planetary nebula>

  main sequence>

  white dwarf>

  red giant

• main sequence>

  nebula>

  planetary nebula>

  white dwarf>

  red giant

• white dwarf>

  red giant >

  main sequence>

  planetary nebula>

  nebula

Bigger stars have longer lives than smaller stars.

• true

• false

All stars begin and end as a __________?

• giant

• black hole

• white dwarf

• nebula

Low-mass stars eventually collapse into what final star remnant?

• Black holes

• Neutron stars

• White dwarfs, then Black dwarfs

• Nebulae