There’s a growing volume of debris in orbit around the earth, commonly called space junk, that ranges from old spacecraft down to tiny flecks of paint. Canada plays a role in scanning the sky for this junk, which can cause serious damage in the event of an impact.
Source: Canada’s role in tracking space junk
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Categories: Gr 9-10 Science, Gr. 11-12 Biology
https://youtu.be/X_tYrnv_o6A Every day in an adult human roughly 50-70 billion of your cells die. They may be damaged, stressed, or just plain old - this is normal, in fact it’s called programmed... read more
Categories: Gr 7-8 Science & Tech, Gr 9-10 Science
This demonstration reviews the concept of density. It examines why certain objects float or sink in water and highlights some interesting information about cola versus diet cola soft drinks. Click... read more
Categories: Gr 9-10 Science, Gr. 11-12 Biology, Gr. 11-12 Chemistry
https://youtu.be/cdphJJcR-Og For decades, lactic acid has taken the blame for the muscle pain you feel when you exercise - but does it really deserve its bad reputation? Hosted by: Hank Green... read more
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This is an excellent video to use in your grade 9 space unit.