EGYPTIAN OASISFIND OUT MOREGroundwater is water under the Earth’s surface. Most groundwater is found in porous rocks, which have tiny holes in them. If a hole is bored straight down through…
WHY DOES IT RAIN? DO SOME PARTS OF THE WORLD RECEIVE MORE RAIN THAN OTHERS? THE WATER CYCLECLOUDSSNOWHAILFIND OUT MOREEarth is unusual among the planets in our Solar System in having an atmosphere…
(Encyclopedia) ethanolethanolĕthˈənōlˌ [key] or ethyl alcohol, CH3CH2OH, a colorless liquid with characteristic odor and taste; commonly called grain alcohol or simply alcohol.
Ethanol is used…
The Question: Do snakes-such as the water moccasin-bite underwater? The Answer: Yes. Snakes can open their mouths and bite if provoked underwater. Although the…
What is a tsunami? The phenomenon we call tsunami is a series of large waves of extremely long wavelength and period usually generated by a violent, impulsive…
(Encyclopedia) formula weight, in chemistry, a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a formula by the number of atoms of that element present in…
(Encyclopedia) hydroplane, small, high-powered racing boat designed to skim along the surface of the water. Its hull is so shaped that at high speeds the bow is tilted up out of the water, reducing…
(Encyclopedia) calorimetrycalorimetrykălˌərĭmˈətrē [key], measurement of heat and the determination of heat capacity. Heat is evolved in exothermic processes and absorbed in endothermic processes;…
(Encyclopedia) wetlands, low-lying ecosystem where the water table is always at or near the surface. It is divided into estuarine and freshwater systems, which may be further subdivided by soil type…
(Encyclopedia) pump, device to lift, transfer, or increase the pressure of a fluid (gas or liquid) or to create a vacuum in an enclosed space by the removal of a gas (see vacuum pumps under vacuum).…
