| A | B |
|---|
| asexual reproduction | reproduction without the fusion of gametes |
| asteroid | a small celestial body composed of rock and metal |
| atmosphere | the envelope of gases surrounding any ccelestial body |
| atmospheric pressure | the pressure exerted by the atmosphere |
| atom | the smallest component of an element |
| bias | a partiality preventing objective consideration of an issue |
| bulletin board system | a computer that is running software allowing users to learve messages and access information of general interest |
| capacity | capability to perform or produce |
| CD-ROM | a compact disk that is used with a computer |
| celestial body | natural objects visible in the sky |
| cell | the basic structural and functional unit of all organisms |
| cell devision | the process in reproduction and growth by which a cell divides to form daughter cells |
| central processing unit | the part of a computer that does most of the data processing |
| chemical change | process determined by substances' composition and structure |
| chemical compound | (chemistry) a subsstance formed by chemical union of two or more elements or ingredients in definite proportion by weight |
| chemical element | any of the more than 100 known substances (of which 9 occur naturally) that cannot be separated into simpler substances and singly or in combination constitute all matter |
| chemical energy | the part of the energy in a substance that can be released by a chamical reaction |
| chemical reation | a process in which substances are changed into other |
| circulatory system | the organs and tissues involved in circulating blood and lymph through the body |
| climate | the weather in some location averaged over a period of time |
| climate change | a change in the world's climate |
| comet | a small frozen mass that travels around the sun |
| conservation of energy | the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes |
| crystal | a solid having a highly regular atomic structure |
| data processing | (computer science) a series of operations on data by a computer in order to retrieve or transform or classify information |
| debris | the remains of something that has been destroyed |
| deceleration | a decrease in rate of change |
| decoder | the kind of intellectual who converts messages from a code to plain text |
| digestive system | the syste that makes food obsorbable into the body |
| disassembly | the act of taking something apart (as a piece of machinery) |
| eclipse | one cellestial body obscures another |
| ecosystem | organisms interacting with their physical environment |
| egg ccell | the female reproductive cell; the female gamete |
| electric current | a flow of electricity through a conductor |
| electrical energy | energy made available by the flow of electric charge through a conductor |
| feedback | the process in which output of a system is returned to input |
| format | the general appearance of a publication |
| formatting | the organization of information accoording to preset specifications (usually for ocmputer processing) |
| function | what something is used for |
| fungus | an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia |
| galaxy | a collection of star system |
| Galileo | Italian astronomer and mathematician who was the first to use a telescope to sudy the stars; demonstrated that different weights decend at the same rate; perfected the refracting telescope that enabled him to make many discoveries (1564-1642) |
| gene | part of DNA controlling physical characteristics and growth |
| heat energy | a form of energy transferred by a difference in temperature |
| homeostasis | metabolic equilibrium maintained by biological mechanisms |
| host | a sperson who invites guests to a social event |
| hydrosphere | the watery layer of the earth's surfacec |
| hypothesis | a tentative insight not yet verified or tested |
| icon | a visual representation produced on a surface |
| igneous rock | rock formed by the solidification of molten magma |
| immune system | a system (including the thymus and bone marrow and tymphoid tissues) that protects the body from foreigh substances and pathogenic organisms by producing the immune response |
| inertia | the tendency of something to stay in rest or motion |
| infection | the invasion of the body by pathogenic microorganisms |
| infrared radiation | electromagnetic radiation with wavelengths longer than visible ligh but shorter than radio waves |
| input device | a device that can be used to insert data into a computer or other computational device |
| insulator | a material with little electrical or thermal V |
| intranet | a restricted computer network |
| invertebrate | any animal lacking a backbone or notochord |
| kinetic energy | the mechanical energy a body has by virtue of motion |
| light year | the distance that light travels in a vacuum in one year |
| lithosphere | the part of the Earth consisting of the crust and mantle |
| logic | the branch of philosophy that nalyzes inference |
| Louis Pasteur | French chemist and biologist whose discovery that fermentation is caused by microorganisms resulted in the process of pasteurization (1822-1895) |
| malfunction | fail to work properly |
| mantle | is the part of the earth between the core and the the crust is the MANTLE |
| Marie Curie | French chemist who won two Nobel prizes |
| mechanical energy | energy in a mechanical form |
| metamorphic rock | rock altered by pressure and heat |
| meteor | small extraterrestrial body that hits the eart's atmosphere |
| mismatched | either not matched or unsuitably matched |
| molecule | the simplest structural unit of an element or compound |
| mutualism | the relation between two organisms that benefit each other |
| navigation | the guidance of ships or airplanes from place to place |
| nervous system | the sensory and control apparatus consisting of a network of nerve cells |
| network | an open fabric woven together at regular intervals |
| nuclear reaction | (physics) a process that alters the energy or structure or composition of atomic nuclei |
| organ | a structure in an animal specialized for some function |
| output | production of a ceretain amount |
| output device | electronic or electromechanical equipment connected to a computer and used to transfer data out of the computer in the form of text, images, sounds, or other media |
| oxidation | the process by which a substance combines with oxygen |
| oxygen | a colorless, odorless gas essential for respiration |
| parasite | an animal or plant that lives in or on a host |
| peer review | evaluate professionally a colleague's work |
| percolation | the slow passage of a liquid through a filtering medium |
| photosynthesis | sysnthesis of compounds in plants aided by radiant energy |
| Pierre Curie | French physicist; husband of Marie Curie (1859-1906) |
| plant tissue | the tissue of a plant |
| predation | the act of preying by a predator who kills and eats the prey |
| prey | animal hunted or caught for food |
| programming language | a language designed for programming computers |
| pulley | a wheel with a groove in which a rope can run |
| ratiation | the act of spreading outward from a central source |
| reproductive system | organs and tissues involved in the production and maturation of gametes and in their union and subsequent development as offspring |
| respiration | a single complete act of breathing in and out |
| respiratory system | the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing |
| rusting | the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water |
| satellite | any celestial body orbiting around a planet or star |
| scienctific method | method of observation to test scientific hypotheses |
| screening | he examination of a group of usually asymptomatic individuals to detect those with a high probability of having or developing a given disease |
| sedimentary rock | rock formed from consolidated clay deposits |
| sedimentation | the phenomenon of sediment or gravel accumulating |
| sexual reproduction | reproduction involving the union or fusion of a male and female gamete |
| skeletal system | the hard structure (bones and cartilages) providing a frame for the body of an animal |
| soil erosion | the washing away of soil by the flow of water |
| species | taxonomic group whoses members can interbreed |
| speed | a rate at which something happens |
| sperm cell | the male reproductive cell; the male gamete |
| spreadsheet | a screen-oriented interactive program enabling a user to lay out financial data on the screen |
| tape drive | a mechanism transporting magnetic tape across teh read/write heads of a tape playback/recorder |
| taxonomy | a classification of organisms based on similarities |
| tissue | part of an organism consisting of an aggregate of cells |
| touch screen | a computer display that enables the user to interact with the computer by touching areas on the screen |
| universal solvent | hypothetical universal solvent once sought by alchemists |
| URL | the address of a webpage on the world wide web (internet) |
| vertebrate | animals having a body or cartilaginous skeleton |
| visible light | (physics) electromagnetic radiation that can produce a visual sensation |
| wavelength | a shared orientation leading to mutual understanding |
