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RISD 1st Science Voc

RISD 6th Science 1st 9 wks.

science vocabularydefinitions
balance to have an equality of weight, parts, etc.
beaker a flat-bottomed cylindrical container often used ina laboratory
biosphere part of the earth that supports life
biotic any living or once-living organism in the environment
biome a major regional or global biotic community such as grasslands or desert which have specific life forms and prevailing climate
carnivore an animal that eats meat
biomass the amount of living matter in a given habitat
water cycle continuous cycle of water molecules on Earth as they rise into the atmosphere, fall back to Earth as rain or other precipitation, and flow into rivers and oceans through the processes of evaporation, condensation, and precipitation
cycle a periodically repeated sequence of events
consumer an organism, usually an animal, that feeds on other plants and/or animals
compost bin a container for organic decaying substances such as dead leaves or grass that are used for fertilizer
control as in an experiment, it is the part that is kept constant
graduated cylinder a container that is marked with degrees or gradations for measuring
condensation the process by which water vapor that liquifies to form fog or rain or solidifies to form snow, sleet, or hail
community interactinb populations in a given area
carbon cycle The combined processes, including photosynthesis, decomposition, and respiration, by which carbon as a component of various compounds cycles between its major reservoirsthe atmosphere, oceans, and living organisms.
carrying capacity maximum number of organisms of a particular species that can be supported indefinitely in a given environment
abiotic any nonliving part of the environment, such as water, sunlight, temperature, and air
dependent variable A variable affected by another variable or by a certain event
decay to rot or become decomposed
decomposer an organism that breaks down the cells of plants and animals into simpler substances
ecosystem all of the communities in a given area nd the abiotic factors that affect them
food web model that describes how energy in the form of food moves through a community
food chain model that describes how energy in the form of food passes from one organism to another
bacteria one-celled organisms usually spherical, rod, or spiral shaped which are involved in fermentation, infectious diseases, etc.
evaporation a change from liquid to vapor form
energy pyramid a depiction of the amount of energy in each trophic level of an ecosystem
independent variable A manipulated variable in an experiment or study whose presence or degree determines the change in the dependent variable
inference The act of reasoning from factual knowledge or evidence
herbivore an animal that eats only plants
fungi a group of single-celled organisms that live by decomposing and absorbing the organic material in which they grow
qualitative of or relating to quality or kind
quantitative of or relating to number or quantity
hypothesis A tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation
prediction something foretold
producer an organism, as a plant, that is able to produce its own food from inorganic substances
omnivore an animal that eats both plants and animals
population all the individuals of one species in a given area
matter the substance or substances of which any physical object consists or is composed
nitrate any compound containing the univalent group –ONO2 or NO3
symbiosis any close interaction among two or more different species, including mutualism, commensalism, and parasitism
watershed the region or area drained by a river, stream, etc
stimuli Something causing or regarded as causing a response
ground water freshwater contained in the open spaces of soil and rock; one of the Earth's most important resources for drinking, irrigation, and washing
surface water that which is seen on the surface
precipitation occurs when drops of water or crystals of ice become too large to be suspended in a cloud and fall in the form of rain, freezing rain, sleet, snow, or hail
nitrogen cycle The circulation of nitrogen in nature, consisting of a cycle of chemical reactions in which atmospheric nitrogen is compounded, dissolved in rain, and deposited in the soil, where it is assimilated and metabolized by bacteria and plants, eventually return
Created by: sgrubb