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ACT TestPrep Science

Biosphere he regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
Uranium Series the radioactive series that starts with uranium 238 and ends with a stable isotope of lead of mass number 206.
Methanol a toxic, colorless, volatile flammable liquid alcohol, originally made by distillation from wood and now chiefly by oxidizing methane.
Beta Particles a fast-moving electron emitted by radioactive decay of substances. (The emission of beta particles was originally regarded as a ray.
Charged Particles particle with an electric charge.
Chromatography the separation of a mixture by passing it in solution or suspension or as a vapor (as in gas chromatography) through a medium in which the components move at different rates.
Colorimeter an instrument for measuring the intensity of color.
Osmosis a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane
paleozoic the Paleozoic era or the system of rocks deposited during it
Nitrite salt or ester of nitric acid, containing the anion NO3− or the group —NO3
Ultra Violet (of electromagnetic radiation) having a wavelength shorter than that of the violet end of the visible spectrum but longer than that of X-rays.
Velocity the speed of something in a given direction.
Specific Gravity the ratio of the density of a substance to the density of a standard, usually water for a liquid or solid, and air for a gas.
Vertebrate an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
Saturation the state or process that occurs when no more of something can be absorbed, combined with, or added.
Objective Lens - the lens or system of lenses in a telescope or microscope that is nearest the object being viewed
Precipitate cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely.
Suspension A mixture in which small particles of a substance are dispersed throughout a gas or liquid.
Synthesis he production of chemical compounds by reaction from simpler materials.
Solvent able to dissolve other substances.
Solute the minor component in a solution, dissolved in the solvent.
Static lacking in movement, action, or change, especially in a way viewed as undesirable or uninteresting.
Sucrose a crystalline disaccharide, C 1 2 H 2 2 O 1 1 , the sugar obtained from the sugarcane, the sugar beet, and sorghum, and forming the greater part of maple sugar; sugar.
Inorganic not consisting of or deriving from living matter.
Manometer an instrument for measuring the pressure acting on a column of fluid, especially one with a U-shaped tube of liquid in which a difference in the pressures acting in the two arms of the tube causes the liquid to reach different heights in the two arms.
Permeable allowing liquids or gases to pass through it.
Chromatid each of the two threadlike strands into which a chromosome divides longitudinally during cell division. Each contains a double helix of DNA.
Projectile a missile designed to be fired from a rocket or gun
Volcanism volcanic activity or phenomena.
Vapor Plume (vapor plumes) Flue gases visible because they contain water droplets
Created by: sarahmckay