How strong is Oobleck?

Oobleck is a mixture of water and cornstarch and an example of a non-Newtonian fluid. Oobleck behaves like a solid when squeezed and behaves like a conventional fluid once the applied pressure is released.

Check out my collaboration with Mark Rober here : https://www.youtube.com/watch?v=W4Dnu…

Invisible Fire Extinguisher and Measuring Lung Capacity – 2 Lessons

Written by Bradley Robins, 2015 Galbraith winner from Brock University.

Invisible Fire Extinguisher

Invisible Fire Extinguisher

Demonstrate the production of gas, specifically carbon dioxide, from the chemical reaction of baking soda and vinegar. The effect this gas has on fire and its density compared to air will be explored. This experiment is another version of the splint test activity, which is commonly done in grade 9 to investigate the properties of various gases.

Measuring Lung Capacity

Measuring lung capacity

Investigate lung capacity and learn to measure it using a spirometer. Trends that exist within the collected data will be identified, discussed, and explored further.

Click here to download the complete lessons….

SciNews – Thursday, April 21, 2016

Brainy ways to fight obesity; vegetable oils don’t reduce risk of heart disease; ice cream – brought to you by chemistry; black hole collision confirmed gravity waves; humans causing climate change – just a few of the themes in today’s eclectic collection of SciNews.  Share these stories with your students and get them excited about science.

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An Eggsperiment

Hen on nest

The egg’s structure is very important for its function and survival.  It rolls for incubation (otherwise, the egg only develops on one side and will not survive), yet it can structurally withstand being sat upon and bumped into other eggs in the nest.  The shape of the egg allows the smaller head of the bird to fit into the pointy part when developing and the more rounded body to fit into the bulbous part of the shell.

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