Tutoring high school science, you may be asked about the albedo effect. The tutor explains it simply. Albedo means loss of incoming radiation due to reflection. Light and heat are examples of radiation (see my previous post). Regarding Earth’s climate, …
Tutoring science, the concept of radiation arises. The tutor explains it. Radiation is electromagnetic energy travelling from its source. Imagine a radio receiver which you can tune to any frequency. Actual radio station signals will be at the low end, …
Tutoring physics, you might encounter the concepts of stress and strain. The tutor defines them. In physics, stress and strain are related, but have very different meanings. A helpful idea is that stress is imposed on an object, while strain …
Tutoring physics, the term elastic can surface. The tutor discusses it. elastic adj: able to recover its original shape; able to resist permanent deformation after a distorting force is withdrawn. Referring to a rubber band, it’s not called elastic because …
Cooking means constant self-tutoring. The tutor speculates about the actual temperature of a warm object. Yesterday I took a glass casserole dish of mac and cheese from the oven. Its baking temp was 177C. An hour later, most of the …
Tutoring math, you notice that people like relatable examples. The tutor brings up his observation of a Canada goose. Looking out over a lake in Nanaimo on Sunday morning, I saw an exceptional Canada goose swimming apart from the others. …
Tutoring science, meteors and their kin might arise. The tutor defines meteor, meteoroid, and meteorite. A meteor is the streak of light you might see in the sky at night, when matter travelling through space enters Earth’s atmosphere. The rock, …
Astronomy: meteor, meteoroid and meteorite: what’s the difference? Read more »
Tutoring physics, you face unit conversions. The tutor shows how the Casio fx-991ES PLUS C can be used. Inside the cover of the Casio fx-991ES PLUS C, at the bottom, is a list of unit conversions. Specifically, it indexes each …
Calculator usage: horsepower to kilowatts on the Casio fx-991ES PLUS C Read more »
Tutoring statistics, you cover linear regression. The tutor shows how to get a best-fit line on the Casio fx-991ES PLUS C. Let’s imagine you have the following data x y 10.1 14.2 17.3 19.5 25.4 22.9 40.0 31.8 Furthermore, you’d …
Calculator usage: linear regression on the Casio fx-991ES PLUS C Read more »
Tutoring chemistry, the distinction between cell and battery is noted. In electrochemistry, a cell is a single unit of electrical energy production. A cell comprises an anode and cathode, plus the ingredients and the environment needed for the chemical reaction …