by msander | May 21, 2018 | Gr 9-10 Science, Gr. 11-12 Physics
The traditional incandescent bulbs used for teaching series and parallel circuits are rated for 3 V or 6 V. The problem is that many power supplies can generate higher voltages. As a result, it is common to have many blown bulbs. With several sections teaching this...
by msander | May 17, 2018 | Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Physics
On Nov. 30, 2010, astronomers discovered asteroid 2010 WC9. However, it soon faded from view and was lost. But now it’s back, and it’s going to whiz past Earth Monday night. Source: Lost asteroid to fly between moon and Earth tonight | CBC...
by msander | May 13, 2018 | Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry, Gr. 11-12 Physics
Throughout Earth’s history, climate has varied greatly. For hundreds of millions of years, the planet had no polar ice caps. Without this ice, the sea level was 70 meters higher. At the other extreme, about 700 million years ago, Earth became almost entirely covered...
by msander | May 3, 2018 | Gr. 11-12 Physics
Mysteriously play an organ pipe without an organ! This demonstration uses heated air to produce vibrations inside a long tube. The vibrations, in turn, produce standing sound waves with a unique tone, or timbre (ta˘mʹ br)—the same concept that produces sound from an...
by msander | Apr 22, 2018 | Gr 4-6 Science & Tech, Gr. 11-12 Physics
In this video I experiment with Lenz’s Law And Faraday’s Law of Induction to generate electricity and magnetic force fields in copper. Check out my sponsor Brilliant for a really fun way to learn! https://www.Brilliant.org/NightHawk To read more about Lenz...
by msander | Apr 12, 2018 | Gr 9-10 Science, Gr. 11-12 Physics, Teaching Strategies
by Erin Turner Intention: The nature of physics experiments (in the high school classroom) creates a perfect situation to allow students to generate their own testable questions. Many of the safety concerns that might exist in other disciplines can often be avoided...
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