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The Winter 2010 issue of The Earth Scientist includes a variety of educational resources, ranging from astronomy to glaciers. Check out the other publications and classroom materials in our online store.

Movie courtesy of the Little Shop of Physics.

Snuff It! with CO2

This episode of "Science It Up!" from the Little Shop of Physics demonstrates how carbon dioxide gas is more dense than air. To show this, they snuff out the flames of candles invisibly - with the help of some "dry ice". You can't see their carbon dioxide gas, but you can prove that it's there when you watch the flames go out.

Right-click (Windows) or Option-click (Mac) here to download a copy of this video in QuickTime format.

Click here to learn more about the Little Shop of Physics.

Last modified January 18, 2011 by Randy Russell.

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Cool It! is the new card game from the Union of Concerned Scientists that teaches kids about the choices we have when it comes to climate change—and how policy and technology decisions made today will matter. Cool It! is available in our online store.

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Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

Carbon Dioxide - CO2

Carbon dioxide is a colorless and non-flammable gas at normal temperature and pressure. Although much less abundant than nitrogen and oxygen in Earth's atmosphere, carbon dioxide is an important constituent...more

Rainbows

Rainbows appear in the sky when there is bright sunlight and rain. Sunlight is known as visible or white light and is actually a mixture of colors. Rainbows result from the refraction and reflection of...more

The Four Seasons

The Earth travels around the sun one full time per year. During this year, the seasons change depending on the amount of sunlight reaching the surface and the Earth's tilt as it revolves around the sun....more

Research Aircraft

Scientists sometimes travel in specially outfitted airplanes in order to gather data about atmospheric conditions. These research aircraft have special inlet ports that bring air from the outside into...more

Anemometer

An anemometer is a weather instrument used to measure the wind (it can also be called a wind gauge). Anemometers can measure wind speed, wind direction, and other information like the largest gust of wind...more

Thermometer

Thermometers measure temperature. "Thermo" means heat and "meter" means to measure. You can use a thermometer to measure the temperature of many things, including the temperature of...more

Weather Balloons

Weather balloons are used to carry weather instruments that measure temperature, pressure, humidity, and winds in the lowest few miles of the atmosphere. The balloons are made of rubber and weigh up to...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF