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Ninth Grade (Grade 9) Stars Questions

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Grade 9 Stars
Which is NOT true about a protostar?
  1. It is usually much larger than it will be as a star
  2. It glows due to the heat of the gases in its core
  3. It may become a brown dwarf
  4. It generates pressure by fusing hydrogen
Grade 9 Stars
Which area of Earth science includes the study of stars?
  1. meteorology
  2. hydrology
  3. geology
  4. astronomy
Grade 9 Stars
The brightness of a star is called its
  1. redshift
  2. parallax
  3. variableness
  4. magnitude
Grade 9 Stars
What is a supernova?
  1. explosion of a small star
  2. explosion of a medium star
  3. explosion of a massive star
  4. collapsing of a nebula
Grade 9 Stars
What color are the hottest stars?
  1. blue-white
  2. yellow
  3. orange
  4. red
Grade 9 Stars
When is a star born?
  1. a nebula expands
  2. helium and oxygen are mixed
  3. nuclear fusion starts
  4. a protostar begins to cool
Grade 9 Stars
What is the actual brightness of a star called?
  1. Apparent magnitude
  2. Absolute magnitude
  3. Absolute intensity
  4. Apparent intensity
Grade 9 Stars
The H-R Diagram shows that main sequence stars
H-R Diagram With Letters - Large
  1. are mostly hot and dim
  2. are mostly cool and bright
  3. increase in brightness as they increase in temperature
  4. decrease in brightness as they increase in temperature
Grade 9 Stars
What will be the final state of the Sun?
  1. black dwarf
  2. white dwarf
  3. supernova
  4. red giant
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