Visitors from Space Comprehension

1. The main purpose of this selection is to tell about________.

A) how to become an astronomer and learn to write books.
B) traveling comets that can change our lives
C) what comets are made of and how they move and change
D) when the next solar system will appear in the universe

2. This selection is most like an informational book because it _____.

A) took place long ago
B) gives information about the solar system
C) is written in the first person
D) tells how to make something

3. What does a comet look like in the sky?

A) a group of stars
B) a full moon
C) a flaming ball
D) the sun

4. Long ago, why did people think a comet was a warning of something bad?

A) Bad things always happened after a comet appeared.
B) Comets appeared in the sky suddenly.
C) Earthquakes and floods occurred after a comet appeared.
D) People did not understand comets.

5. The gas in the comet's coma can be compared to the gas in a ____________.

A) solar wind
B) dirty snowball
C) shooting star
D) fluorescent light bulb

6. Scientists who study the planets and stars are called ___.

A) dentists
B) astronomers
C) astronauts
D) doctors

7. Where do scientists think a huge cloud of comets might be?

A) between the planets
B) behind the moon
C) around the sun
D) past the farthest planet

8. The force that connects the solar system to the sun is called ______.

A) an asteroid
B) a coma
C) a planet
D) gravity

9. What is the name of the "flying rocks" in our solar system?

A) comets
B) meteors
C) boulders
D) asteroids

10. A comet starts out as ______.

A) chunks of ice
B) a large rock
C) a ball of frozen gases
D) a star

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) loops
B) periods
C) ellipses
D) years

13. What is one thing that makes a comet glow?

14. What is a comet tail?

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