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Ninth Grade (Grade 9) Stars Questions

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Grade 9 Stars

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The process in which smaller atomic nuclei combine into large atomic nuclei is known as
  1. gravitational attraction.
  2. parallax.
  3. nuclear fusion.
  4. the Doppler effect.
Grade 9 Stars
Which star below blows up in a supernova explosion?
  1. low mass star
  2. medium mass star
  3. massive star
Grade 9 Stars
Which area of Earth Science includes the study of stars?
  1. meteorology
  2. hydrology
  3. geology
  4. astronomy
Grade 9 Stars
Two forces that are responsible for the creation of the solar nebula are
  1. gravity and pressure.
  2. magnetic force and weak force.
  3. gravity and strong force.
  4. strong force and magnetic force.
Grade 9 Stars
Distances to stars are usually expressed in units called
  1. miles.
  2. kilometers.
  3. light-years.
  4. astronomical units.
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
Which type of star is the Sun?
  1. black hole
  2. black dwarf
  3. main sequence
  4. red giant
Grade 9 Stars
What color are the hottest stars?
  1. blue
  2. yellow
  3. orange
  4. red
Grade 9 Stars
A low mass star will end its life as which of the following?
  1. Red Dwarf
  2. Red Giant
  3. Black Dwarf
  4. Brown Dwarf
Grade 9 Stars
The H-R diagram plots star
  1. absolute magnitude vs. apparent magnitude.
  2. mass vs. absolute magnitude.
  3. luminosity vs. surface temperature.
  4. surface temperature vs. mass.
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
The measure of a star's brightness is called its
  1. color index.
  2. visual binary.
  3. magnitude.
  4. parallax.
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 lifespan of a star will depend mainly on its
  1. temperature.
  2. brightness.
  3. mass.
  4. magnitude.
Grade 9 Stars
The brightness of a star is called its
  1. redshift.
  2. parallax.
  3. variableness.
  4. magnitude.
Grade 9 Stars
A red giant is formed when
  1. a star begins fusing helium.
  2. a star begins fusing hydrogen.
  3. binary stars merge.
  4. a star begins burning its hydrogen shell.
Grade 9 Stars
What does a Hertzsprung-Russell (H-R) diagram show?
  1. the location of stars in the sky
  2. the absolute magnitude and temperature of the stars
  3. the apparent magnitude and temperature of the stars
  4. the absolute magnitude and mass of stars
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
This diagram 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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