Name:____________________________        
Reading Comprehension Sheet #9: Pluto/page 1 of 2

Directions: Use the information from the reading sheet to answer the questions below:

1. Why wasn't Pluto discovered until 1930?

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2. Which of the following tells what the word theories means in the sentence:

"Scientists have interesting theories about why Pluto is so small and where it comes from"?

A. Advice from people who are very intelligent.
B. Explanations about something that are proven by experiments.
C. Ideas about something that haven't been proven yet.

3. What is the Kuiper Belt?

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4. What are two theories scientists have about where Pluto came from?

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