Back to: Science e-catalog Grade e-Journal
e-Journal

Is Pluto a Planet? (p. 454)


Step 1. Questions

Recently, it was decided that Pluto no longer should be considered a planet. Do you agree with this decision made by the International Astronomical Union, or IAU?

Write a letter to the editor of your local newspaper, arguing either for or against Pluto as a planet. You will need to research the planets, the Kuiper Belt, and Pluto. Also, you may refer to page 454 in your textbook. Here are some questions to guide your research:
  • How is Pluto similar to the planets in our solar system?
  • How does Pluto differ from the planets in our solar system?
  • What is the Kuiper Belt?
  • What similarities exist between Pluto and the other objects in the Kuiper Belt?
Are you ready? Begin by visiting the Web sites in Step 2. Look for answers to the questions above, and write down what you learn in the note-taking boxes.

With teacher supervision, you may use search engines to research other Web sites. You also can research Pluto and our solar system at the library. When you are ready, follow Steps 3 and 4 to write your letter.



Step 2. Research

Research answers to the questions you were asked in Step 1. Visit these Web sites. Take notes about them on this page, too!


Toolbox Tip: Click here to learn how to see video and hear audio.


Solar System Exploration
This Web site from NASA introduces you to our solar system. Read the definition of a planet. Then learn about the Kuiper Belt by clicking KUIPER BELT on the left side of the page. Click the KID'S EYE VIEW tab for more facts about the objects in the Kuiper Belt. Then click PLUTO. Remember to read information from both OVERVIEW and KID'S EYE VIEW.
Take Notes:



The Solar System
You can watch a movie about the solar system at this NASA Web site. Look for the link under the heading "Show me a movie about the Solar System." Click THE PLANETS to learn more about the planets. Then click PLUTO to learn about Pluto's new status.
Take Notes:



Pluto and the Plutons
Read this article from Science News for Kids about the decision to reclassify Pluto as a dwarf planet. What is your opinion of this article's content?
Take Notes:



or