Visitors from Space Comprehension

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

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

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

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

3. 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

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) People did not understand comets.
C) Earthquakes and floods occurred after a comet appeared.
D) Comets appeared in the sky suddenly.

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

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

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

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

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

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

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

A) a coma
B) a planet
C) an asteroid
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 star
D) a ball of frozen gases

11. The tails of comets are made of ______.

A) gas and dust
B) ice
C) rocks
D) dust

12. What is the name for the orbits that comets take around the sun?

A) periods
B) years
C) loops
D) ellipses

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

14. What is a comet tail?

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