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Several species of black and yellow caterpillars live on trees in the United States. Most of them are not poisonous to people or pets. However, at least one variety of black and yellow tree caterpillar requires handling with care because…
When it comes to measuring weight — or more accurately, mass — in the United States, people use pounds. But nearly every other country in the world uses kilograms. If you want to carry on a useful conversation with someone…
The egg drop is a popular science experiment conducted by elementary school children learning about physics. The goal is to create a box that will protect the egg from a high fall, usually off of a rooftop. Egg drop boxes…
A potato clock is powered by acid within the spud reacting with a positive and a negative electrode. When the reaction occurs, electrons flow between the materials, generating an electric current. The negative electrode, or anode, in a potato battery…
Squirrels are common throughout the world and occur naturally in North and South America, Europe, Asia and Africa. Their abundance is perhaps supported by the fact that there are well over 250 squirrel species, including types of ground squirrels, tree…
The goal of a motor is to get something to move. Often, that something is an axle, the rotational motion of which can be converted into translational motion, as in a car, or otherwise be put to use to do…
Physicists use everyday words in seemingly strange and very specific ways. For a physicist, work (W) isn’t what you do from nine to five on weekdays. It’s the product of the force (F) applied to an object multiplied by the…
Hunting for wild mushrooms in Tennessee can be a fun way to get outside and add some local flavor to a delicious home cooked meal. But foraging comes with its own dangers, since some types of wild mushrooms contain toxins…
Chemical solutions have a concentration associated with them. The concentration allows you to know how much of a substance you are working with. Concentration is often reported in molarity (M), which is defined as mole of solute per liter solution…
Food chains and food webs vary depending on the habitat. Woodlands also vary, depending on the area. The main types of woodlands are coniferous forests, temperate deciduous forests and rainforests. Even these categories can be subdivided, as with temperate and…
