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A gear consists of toothed wheels attached to shafts. It creates a mechanical advantage in a range of applications, for example a cyclist uses gears to intensify the power output of his pushing on the pedals. Gears have many properties,…
Chemists use equivalent units, or equivalents, to express the reactive capacity of a chemical species such as electrons or ions. The number of equivalents is a number that defines how many electrons or ions may be transferred in a chemical…
Math problems often require you to increase a number by a percentage. First, you find that percentage of the number, and then add it to the original number. The process is the same for all numbers and percents, and can…
Orchids are cultivated and prized by gardeners all over the world. According to experts, there are between 20,000 and 30,000 different species of orchids around the world. In the wild, orchids can be found on every continent except Antarctica, though…
A gorge is a deep channel formed by a river that has eroded the earth’s crust over millions of years. Some gorges are so large they are visible from space. One of the most famous is the Grand Canyon. Characteristics…
When thinking of the rainforest, you may envision the tropics, and with good reason–the world’s largest rainforest is the steamy jungles of the Amazon. However, a rainforest is simply a forested area that receives high rainfall, so they occur all…
Until 2006, Neptune was the second-farthest of the nine known planets from the sun – at least most of the time. Then, Pluto, the erstwhile ninth and outermost planet in the solar system, was reclassified as a “dwarf planet.” That…
As a carnivorous mammal, the bobcat, Lynx rufus, lives in areas from southern Canada to parts of Mexico. Except for areas around the Great Lakes, the central valley in California, parts of Kansas and places on the East Coast, bobcats…
If you grew up in a snowy climate, it’s likely some of your first memories of winter involved catching snowflakes on your tongue. And who could blame you? Fresh-fallen, fluffy snow just looks so appealing – plus, it was natural…
Given a quadratic equation, most algebra students could easily form a table of ordered pairs that describe the points on the parabola. However, some may not realize you can also perform the reverse operation to derive the equation from the…
