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ACT TestPrep Science
| Term | Definition |
|---|---|
| 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| Methanol | a toxic, colorless, volatile flammable liquid alcohol, originally made by distillation from wood and now chiefly by oxidizing methane.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
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