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Ninth Grade (Grade 9) Stars Questions

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Grade 9 Stars
Binary star systems are used to determine what property of stars?
  1. Magnitude
  2. Mass
  3. Distance
  4. Temperature
Grade 9 Stars
Stars are mainly made of what?
  1. Dust particles
  2. Hot gas
  3. Hot liquid
  4. Molten Rocks
Grade 9 Stars
Red stars are the hottest stars.
  1. True
  2. False
Grade 9 Stars
Which of the following describes deuterium?
  1. It is a highly radioactive form of carbon.
  2. It is an isotope of hydrogen which has one neutron.
  3. It is a by-product of helium fusion.
  4. It is a type of atom stripped of its electrons.
Grade 9 Stars
Star A has an absolute magnitude of -4.9. Star B has an apparent magnitude of -6.2. Which star is the shortest distance from Earth?
  1. Star A because it is brighter.
  2. Star B because it is brighter.
  3. Star A because it is bigger.
  4. There is not enough information to determine.
Grade 9 Stars
What form of energy is produced when a positron collides with an electron in the proton-proton chain?
  1. Alpha Radiation
  2. Beta Radiation
  3. Gamma Radiation
  4. Delta Radiation
Grade 9 Stars
A red giant star follows what path on the HR diagram after it begins fusing helium?
  1. Red Giant Branch
  2. Horizontal Branch
  3. Asymptotic Giant Branch
  4. Main Sequence
Grade 9 Stars
If two stars have the same absolute magnitude, which of the following must be true?
  1. They are the same distance from Earth.
  2. They have the same mass.
  3. They are the same temperature.
  4. None of the above
Grade 9 Stars
Which of the following stars is brightest?
  1. M= 3.9
  2. M= 5.2
  3. M= -1.7
  4. M= -2.3
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