Visitors from Space Comprehension
  • 1. He hit the ball with such _________ that you could hear the crack of the bat.
A) particles
B) nucleus
C) force
D) loops
  • 2. The center, or __________ of the star looked extremely bright.
A) nucleus
B) force
C) solar wind
D) particles
  • 3. Cowboy Charlie made huge __________ with his lasso.
A) particles
B) loops
C) fluorescent
D) nucleus
  • 4. The ___________ if a force from the Sun.
A) nucleus
B) loops
C) solar wind
D) fluorescent
  • 5. The sawdust _____________ flew around the garage when dad sawed the wood into pieces.
A) force
B) loops
C) particles
D) nucleus
  • 6. The new ____________ lights brighten up the classroom.
A) loops
B) fluorescent
C) solar wind.
D) force
  • 7. This selection is most like an informational book because it _____.
A) gives information about the solar system
B) tells how to make something
C) took place long ago
D) is written in the first person
  • 8. What does a comet look like in the sky?
A) a full moon
B) a flaming ball
C) a group of stars
D) the sun
  • 9. Long ago, why did people think a comet was a warning of something bad?
A) Bad things always happened after a comet appeared.
B) People did not understand comets.
C) Earthquakes and floods occurred after a comet appeared.
D) Comets appeared in the sky suddenly.
  • 10. A comet starts out as ______.
A) a ball of frozen gases
B) a planet
C) a star
D) a snowball
  • 11. Scientists who study the planets and stars are called ___.
A) dentists
B) doctors
C) astronomers
D) astronauts
  • 12. Where do scientists think a huge cloud of comets might be?
A) behind the moon
B) around the sun
C) past the farthest planet
D) between the planets
  • 13. The force that connects the solar system to the sun is called ______.
A) an asteroid
B) gravity
C) a planet
D) a coma
  • 14. The gas in the comet's coma can be compared to the gas in a ____________.
A) solar wind
B) bulb shooting star
C) dirty snowball
D) fluorescent light bulb
  • 15. The tails of comets are made of ______.
A) gas and dust
B) fur
C) ice
D) rocks
  • 16. What is the name of the "shooting stars" that burn up as they enter Earth's atmosphere?
A) meteors
B) asteroids
C) comets
D) boulders
  • 17. What is the name for the orbits that comets take around the sun?
A) periods
B) years
C) loops
D) ellipses
  • 18. The main purpose of this selection is to tell about________.
A) what comets are made of and how they move and change
B) traveling comets that can change our lives
C) how to become an astronomer and learn to write books.
D) when the next solar system will appear in the universe
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