Science

Goethite Definition Goethite (FeO(OH)) is a black, brown, or yellow mineral consisting of hydrated iron oxide in the form of orthorhombic crystals or fibrous masses.…

Comparing Scientific and Standard Notation Numbers Scientific notation is used to express very large or very small numbers. A number in scientific notation is written…

Craton Definition Craton is a large portion of a continental plate that has been relatively undisturbed since the Precambrian era and includes both shield and…

Comparing Metric System: Masses, Volumes and Lengths The metric system uses units such as meter, liter, and gram to measure length, liquid volume, and mass,…

Biliary Colic Definition Biliary colic is a type of smooth muscle or visceral pain specifically associated with the passing of stones through the bile ducts,…

Plate Tectonics Definition Plate tectonics is a theory that the Earth’s lithosphere (the crust and upper mantle) is divided into a number of large, platelike…

Cholecystitis Definition Cholecystitis is an inflammation of the gall bladder, due to bacterial infection or the presence of gallstones. Complications of acute cholecystitis include gallstone…

Comparing Whole Numbers and Fractions An integer and a fractional number can be compared. One number is either greater than, less than or equal to…

Hydrogen Cyanide Definition Hydrogen cyanide (HCN) is a colorless, flammable, extremely poisonous liquid that boils slightly above room temperature, at 25.6 °C (78.1 °F). Salts…

Comparing Decimals and Fractions Comparing decimals is very easy, but also very important. In fact, it’s the first thing we should learn to do in…

Chondrite Definition Chondrite is a stony meteorite that contains chondrules embedded in a fine matrix of the silicate minerals olivine and pyroxene. About 85 percent…

Gallbladder Definition Gallbladder is a small, pear-shaped muscular sac in most vertebrates in which bile is stored. The gallbladder is located beneath the liver and…