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Topics/Subjects:
Asteroids and comets  
Educational Level:
High school  
Learning Time:
5 to 10 minutes  
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The basic chemistry of water, along with a brief glimpse into water's origin on Earth, are discussed in this two page article. The article can be used as a "reading to be informed" activity in a stand-alone fashion or can be incorporated into a... (View More)

Keywords: Water chemistry
Audience: Middle school, High school, Informal education
Materials Cost: Free

This classic video explains the history, debate and continuing discussion of the definition of a planet.

Keywords: Dwarf planet
Audience: Middle school, High school, Informal education
Materials Cost: Free
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