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Chemistry  
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Informal education  
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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

Designed for Science On a Sphere, this brief (2:04) video explains the ozone hole over Antarctica - the annual thinning of stratospheric ozone caused by manufactured chemicals. Twenty-five years after the Montreal Protocol limited the use of ozone... (View More)

Audience: Informal education
Materials Cost: Free

This brief (1:46) video explains the stratospheric ozone layer and its role in absorbing harmful UV radiation from the sun. The visualization shows how the thickness of the ozone layer varies with air flow aloft and seasons and where biggest changes... (View More)

Audience: Informal education
Materials Cost: Free

Emphasizing the synergies between science and engineering, these video clips highlight the research of professional ocean scientists and engineers in various disciplines. The clips are accompanied by additional relevant content including images,... (View More)

Students are introduced to the periodic table and the concept of atomic elements. The group discusses how all material in the Universe is composed of elements and that the atom is the smallest particle that still has the physical and chemical... (View More)

In this short demo/activity, a balloon with baking soda in it is stretched over the mouth of a flask or bottle containing vinegar. The balloon is tipped so that the baking soda falls into the vinegar, and the reaction creates carbon dioxide, which... (View More)

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