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) how to become an astronomer and learn to write books.
C) what comets are made of and how they move and change
D) traveling comets that can change our lives

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

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

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) Earthquakes and floods occurred after a comet appeared.
B) Comets appeared in the sky suddenly.
C) People did not understand comets.
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) solar wind
B) dirty snowball
C) shooting star
D) fluorescent light bulb

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

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

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

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

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

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

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

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

10. A comet starts out as ______.

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

11. The tails of comets are made of ______.

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

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

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

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

14. What is a comet tail?

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