ACT TestPrep Science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Biosphere | he regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
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| Uranium Series | the radioactive series that starts with uranium 238 and ends with a stable isotope of lead of mass number 206.
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| Methanol | a toxic, colorless, volatile flammable liquid alcohol, originally made by distillation from wood and now chiefly by oxidizing methane.
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| Beta Particles | a fast-moving electron emitted by radioactive decay of substances. (The emission of beta particles was originally regarded as a ray.
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| Charged Particles | particle with an electric charge.
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| 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.
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| Colorimeter | an instrument for measuring the intensity of color.
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| 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
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| paleozoic | the Paleozoic era or the system of rocks deposited during it
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| Nitrite | salt or ester of nitric acid, containing the anion NO3− or the group —NO3
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| 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.
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| Velocity | the speed of something in a given direction.
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| 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.
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| Vertebrate | an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
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| Saturation | the state or process that occurs when no more of something can be absorbed, combined with, or added.
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| Objective Lens | - the lens or system of lenses in a telescope or microscope that is nearest the object being viewed
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| Precipitate | cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely.
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| Suspension | A mixture in which small particles of a substance are dispersed throughout a gas or liquid.
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| Synthesis | he production of chemical compounds by reaction from simpler materials.
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| Solvent | able to dissolve other substances.
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| Solute | the minor component in a solution, dissolved in the solvent.
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| Static | lacking in movement, action, or change, especially in a way viewed as undesirable or uninteresting.
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| 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.
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| Inorganic | not consisting of or deriving from living matter.
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| 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.
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| Permeable | allowing liquids or gases to pass through it.
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| Chromatid | each of the two threadlike strands into which a chromosome divides longitudinally during cell division. Each contains a double helix of DNA.
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| Projectile | a missile designed to be fired from a rocket or gun
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| Volcanism | volcanic activity or phenomena.
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| Vapor Plume | (vapor plumes) Flue gases visible because they contain water droplets
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