Although there’s nothing official about it, it’s traditional to say the upcoming March or vernal equinox signals the beginning of spring in the Northern Hemisphere and autumn in the Southern Hemisphere. This equinox does provide a hallmark for the sun’s motion in our sky, marking that special moment when the sun crosses the celestial equator going from south to north. The 2017 vernal equinox arrives on March 20 at 10:29 UTC.
Categories: Gr 9-10 Science, Gr. 11-12 Chemistry
The boiling point of a liquid depends on the external air pressure. When water is placed under vacuum, the boiling point decreases and the water boils. Boiling, however, is an endothermic... read more
Categories: Gr 9-10 Science
[embed]https://www.youtube.com/watch?v=fDek6cYijxI[/embed] Chaos theory means deterministic systems can be unpredictable. Thanks to LastPass for sponsoring this video. Click here to start... read more
Categories: Gr 7-8 Science & Tech, Gr 9-10 Science, Safety
Demonstrations are an integral part of any science program. Â These activities engage students and help bring the "real world" into the classroom. STAO has recently developed a collection of safe... read more
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