# How Much Mass Is Needed to Make a Body Round? *

 Difficulty Time Required Average (6-10 days)
*Note: This is an abbreviated Project Idea, without notes to start your background research, a specific list of materials, or a procedure for how to do the experiment. You can identify abbreviated Project Ideas by the asterisk at the end of the title. If you want a Project Idea with full instructions, please pick one without an asterisk.

## Abstract

Use your Internet sleuthing skills to learn about solar system objects. Create a table of measurements of moons and asteroids in order to determine if there is a size threshold for roundness. A good source of information would be an online guide such as The Nine Planets (Arnett, W.A., 2006). You'll find information about planetary satellites, including dimensions and accompanying pictures. From the pictures, classify the satellites and asteroids according to how round they are. Can you think of a way to quantify roundness? See if you can determine what the minimum mass seems to be before solar system objects become spherical (Odenwald, 1997).

### MLA Style

Science Buddies Staff. "How Much Mass Is Needed to Make a Body Round?" Science Buddies. Science Buddies, 30 June 2014. Web. 28 May 2017 <http://www.sciencebuddies.org/science-fair-projects/project_ideas/Astro_p025.shtml>

### APA Style

Science Buddies Staff. (2014, June 30). How Much Mass Is Needed to Make a Body Round?. Retrieved May 28, 2017 from http://www.sciencebuddies.org/science-fair-projects/project_ideas/Astro_p025.shtml

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Last edit date: 2014-06-30

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