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Ninth Grade (Grade 9) Stars Questions

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Grade 9 Stars
Which area of Earth science includes the study of stars?
  1. meteorology
  2. hydrology
  3. geology
  4. astronomy
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
The lifespan of a star will depend on its?
  1. temperature
  2. brightness
  3. mass
  4. magnitude
Grade 9 Stars
What will be the final state of the Sun?
  1. black dwarf
  2. white dwarf
  3. supernova
  4. red giant
Grade 9 Stars
The main sequence on the H-R diagram includes
  1. white dwards
  2. red giants
  3. about 90% of all stars
  4. pulsars
Grade 9 Stars
A main sequence star is mostly made of which two elements?
  1. Hydrogen and Carbon
  2. Helium and Carbon
  3. Helium and Iron
  4. Hydrogen and Helium
Grade 9 Stars
The diagram below would be most useful for
H-R Diagram With Text Labels - Small
  1. locating stars
  2. classifying stars
  3. locating galaxies
  4. classifying galaxies
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