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By touching the negative and positive leads of a multimeter that is on in the resistance setting allows you to measure the conductivity of water, a test of its purity. When water conducts electricity, it is made possible by water…
When discussing the composition of the Earth as a whole, geologists conceptually divide the Earth into several layers. One of these layers is the crust, which is the outermost part of the planet. The lithosphere is not an individual layer,…
An average is a number that shows a middle or normal value for a set of data. It is calculated by adding all the data points then dividing the total by the number of data points. A running average is…
Every living organism depends upon its proteins for its existence. In many organisms, proteins form the very structure of the living creature, but even in plants — where the structures are built more from sugars — proteins perform the functions…
Yeast is a single-celled organism that reproduces asexually and has been used in baking and brewing for thousands of years. There are at least 1,500 species of yeast, all of which are technically living organisms. Yeast occurs naturally in the…
Resistors are electronic components whose main purpose is to help control the amount of current in a circuit. Their property is that of resistance; a high resistance means a lower current flow, and a low resistance means a higher current…
The state of Utah has many wide-open expanses of land, including mountains, deserts and forests. Among Utah’s diverse natural resources are several that contribute to making various products or producing energy for electricity or combustion engines. The Utah State Government…
Mud daubers are a type of solitary wasp common in North America. They generally grow to be ¾ to 1 inch long and can be dull black, iridescent black, or black with yellow markings. They can be identified by their…
Electromagnets work just as well as permanent magnets. In fact, they are even more useful, because you can turn them on and off. You’ll find electromagnets in hard drives, speakers and even in sophisticated equipment like MRI machines and CERN’s…
At the base of every food chain lie primary producers: organisms that turn sunlight into chemical energy and later become food for consumers that can’t manufacture their own. The major primary producers in most marine ecosystems are microscopic plankton, tiny…
