Visitors from Space Comprehension
  • 1. The main purpose of this selection is to tell about________.
A) when the next solar system will appear in the universe
B) what comets are made of and how they move and change
C) how to become an astronomer and learn to write books.
D) traveling comets that can change our lives
  • 2. This selection is most like an informational book because it _____.
A) tells how to make something
B) is written in the first person
C) took place long ago
D) gives information about the solar system
  • 3. What does a comet look like in the sky?
A) a full moon
B) a group of stars
C) a flaming ball
D) the sun
  • 4. Long ago, why did people think a comet was a warning of something bad?
A) Earthquakes and floods occurred after a comet appeared.
B) People did not understand comets.
C) Comets appeared in the sky suddenly.
D) Bad things always happened after a comet appeared.
  • 5. The gas in the comet's coma can be compared to the gas in a ____________.
A) shooting star
B) fluorescent light bulb
C) dirty snowball
D) solar wind
  • 6. Scientists who study the planets and stars are called ___.
A) astronauts
B) doctors
C) dentists
D) astronomers
  • 7. Where do scientists think a huge cloud of comets might be?
A) between the planets
B) around the sun
C) behind the moon
D) past the farthest planet
  • 8. The force that connects the solar system to the sun is called ______.
A) a coma
B) an asteroid
C) a planet
D) gravity
  • 9. What is the name of the "flying rocks" in our solar system?
A) boulders
B) meteors
C) asteroids
D) comets
  • 10. A comet starts out as ______.
A) a large rock
B) chunks of ice
C) a star
D) a ball of frozen gases
  • 11. The tails of comets are made of ______.
A) ice
B) rocks
C) dust
D) gas and dust
  • 12. What is the name for the orbits that comets take around the sun?
A) periods
B) loops
C) ellipses
D) years
  • 13. What is one thing that makes a comet glow?
  • 14. What is a comet tail?
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