by msander | May 11, 2017 | Gr 4-6 Science & Tech, Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology
All mammals have hair at some point in their lives, but none of them wear it quite like humans. Why does our hair grow where it does, and not grow where it doesn’t? How does our hair get its color? And why does it go gray and often fall out when we get older and go...
by msander | May 11, 2017 | Gr 4-6 Science & Tech, Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology
You could almost say they are drop-dead gorgeous: when certain female dragonflies are pursued by unwanted suitors, they deter them by crashing to the ground Source: Female dragonflies fake sudden death to avoid male advances | New Scientist
by msander | May 11, 2017 | 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 process—as the water boils, the temperature decreases, and the water soon...
by msander | May 8, 2017 | Gr 4-6 Science & Tech, Gr. 11-12 Physics
The zero-g plane allows for a lot of experiments to be conducted without the expense of getting equipment into orbit. Apparently 80% of microgravity research can be performed in a zero-gravity plane, which is much cheaper than going to space. The flame from the...
by msander | May 8, 2017 | Gr 1-3 Science & Tech, Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology
The size of a school bus but in many ways a mystery, whale sharks continue to fascinate. Join a team of international scientists at a renowned marine sanctuary in Cabo Pulmo, Mexico and discover how we’re trying to better understand these remarkable creatures....
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