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Ninth Grade (Grade 9) Universe Questions

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Grade 9 Universe
About how long ago was the "Big Bang"?
  1. 10 million years ago
  2. 2 billion years ago
  3. 14 billion years ago
  4. 20 billion years ago
Grade 9 Universe

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What is the major difference between an E3 galaxy and an E7 galaxy?
  1. E3 is more elliptical in shape than E7.
  2. E7 is more elliptical in shape than E3.
  3. E3 has barred spiral arms and E7 does not.
  4. E7 has barred spiral arms and E3 does not.
Grade 9 Universe

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Which type of the galaxies listed below is not shown on the diagram?
  1. spiral
  2. irregular
  3. elliptical
  4. lenticular
Grade 9 Universe
The diagram shows
Hubble Sequence #2
  1. the evolutionary sequence of stars.
  2. the evolutionary sequence of galaxies.
  3. the morphological classification of stars.
  4. the morphological classification of galaxies.
Grade 9 Universe

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How is the Milky Way Galaxy currently classified on the Hubble sequence?
  1. spiral
  2. lenticular
  3. irregular
  4. elliptical
  5. barred spiral
Grade 9 Universe

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M95 is classified as a SBb galaxy. Andromeda Galaxy is classified as Sb. The difference in classification indicates which of the following?
  1. M95 is a barred galaxy and Andromeda is not.
  2. Andromeda is a barred galaxy and M95 is not.
  3. M95 has more tightly wound spiral arms than Andromeda.
  4. Andromeda has more tightly wound spiral arms than M95.
Grade 9 Universe

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Young galaxies are located on the left side of the diagram and older galaxies fall on the right side of the diagram.
  1. True
  2. False
Grade 9 Universe

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S0 is classified as a spiral galaxy.
  1. True
  2. False
Grade 9 Universe

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Which description best fits a SBc galaxy?
  1. spiral with tightly wound arms
  2. spiral with loosely wound arms
  3. barred spiral with tightly wound arms
  4. barred spiral with loosely wound arms
Grade 9 Universe

This question is a part of a group with common instructions. View group »

M86 is a slightly elliptical galaxy. Based on the diagram, which would be the best classification of M86?
  1. E0
  2. E3
  3. E7
  4. S0
Grade 9 Universe
The way scientists measure distance in space is by using
  1. days.
  2. light-years.
  3. decades.
  4. ancient Aztec calendar.
Grade 9 Universe
What is a light year?
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