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Fossils are the remains or traces of organisms that lived long ago and have been preserved. One fascinating and often beautiful kind of fossil is a carbon film fossil, or carbonized or compression fossil, that preserves an organism’s remains in…
If your teacher has asked you to calculate the diagonal of a triangle, she’s already given you some valuable information. That phrasing tells you that you’re dealing with a right triangle, where two sides are perpendicular to each other (or…
A rectangle is any flat shape with four straight sides and four 90 degree angles, or right angles. Each side of a rectangle joins with two right angles. The diameter of a rectangle is the length of a diagonal, or…
Electromotive force (EMF) is an unfamiliar concept to most people, but it’s closely linked to the more familiar concept of voltage. Understanding the difference between the two and what EMF means gives you the tools you need solve many problems…
Snapping turtles are among the most impressively armed turtles in the world. The common snapping turtle of the central and eastern U.S. and far southern Canada, and its close relatives the Central and South American snappers of the genus Chelydra,…
The measurement 1/16 of an inch appears on measuring tapes and rulers to calculate dimensions that are too small to express in whole inches or larger fractions. The general formula for converting from a larger quantity to a smaller one…
Temperature in outer space depends on many factors: distance from a star or other cosmic event, whether a point in space is in direct light or shade and if it is subject to a solar flare or solar wind. Variation…
Leeches are segmented worms that live in a wide rage of environments, including fresh water, salt water and on land. The are hermaphroditic and produce young from eggs stored in cocoons. Some leeches are carnivorous and swallow their prey whole,…
Graphing calculators, such as the TI-84 Plus, are handy tools when it comes to advanced mathematics. With the ability to be programmed, these calculators can be customized to suit the user’s needs – allowing even the most difficult equations to…
When you first learned about squared numbers like 32, 52 and x2, you probably learned about a squared number’s inverse operation, the square root, too. That inverse relationship between squaring numbers and square roots is important, because in plain English…
