science glossary grade 6

Polaris - north star. soil texture - soil quality that is based on the proportions of soil particles. lichen - organism made up of a fungus and a green alga. anther - part of the stamen that produces pollen.                                                                                                                                          1 alveolus (plural-alveoli) - grape-like cluster of tiny “balloons” in the lungs. constructive boundary - type of plate boundary where new material is added to the plates. flammability - ability to burn. binomial nomenclature - naming system in which organisms are given two names:  a genus and species. Unit 1 Chapter 1. without the involvement of gametes.                  and forms negative ions. subduction - process in which the ocean floor plunges back into the interior of the Earth through a trench. solution - mixture of two or more substances uniformly dispersed throughout a single phase. acid precipitation - rain, sleet, or snow that contains a high concentration of acids.     food chain - transfer of energy through various stages as a result of feeding patterns of a series of organisms. anemometer - instrument used to measure wind speed. Sentences provides practice recognizing contextual sentences for each spelling and vocabulary word. savanna - grassland that often has scattered trees and that is found in tropical and subtropical areas where seasonal rains, fires, and S wave - seismic wave that causes particles of rock to move in a side-to-side direction. smooth muscle - nonstriped muscle tissue that is not voluntary; responsible for involuntary movement.                   thunder - sound caused by the rapid expansion of air along an electrical strike. which the numerator and denominator have different units. biodiversity - existence of a wide range of different species in a given area or specific period of time. clastic rock - sedimentary rocks made up of rock fragments mixed with sand, clay and mud. spore - single reproductive cell that can grow into a multicellular organism. urea - nitrogenous waste formed in the liver. continental drift (theory of continental drift) - states that the continents once formed a single land mass, broke up, and drifted to loss to friction or heat;  a machine’s output work divided by its input work and multiplied by 100. observation - process of obtaining information by using the senses. numerical data.                                                                                                                                                taiga - cold region of cone-bearing evergreen trees that lies just below the tundra and is the Earth’s largest terrestrial biome. atom - tiny particle of matter consisting of a nucleus that contains protons and neutrons and an electron cloud that contains This is the right place where find the answers to your questions like : Who ? pressure - force exerted per unit area.  amphibian - cold-blooded vertebrate animal that lives in water when it is young and as an adult, it moves onto land.                 limited natural resources results in individuals with certain natural variations adapted to their specific environments.  been disturbed.  (law of superposition) mitosis - duplication and division of the nucleus and of the chromosomes during cell reproduction; a process of nuclear division in cloud - collection of small water droplets or ice crystals suspended in the air, which forms when the air is cooled and condensation bar graph - tool that uses bars to show the relationships between variables; can be horizontal or vertical and can display any outcome variable - factor being measured or observed in an experiment;  a factor that responds to, or depends on, other factors.  society - group of animals of the same species that live and work together in the same way and in which each member has a certain El Nino - disturbance of wind patterns and ocean currents in the Pacific Ocean that causes temporary climate changes in many cinder cone - volcano made mostly of cinders and other rock particles that have been blown into the air. adaptation - any structure or behavior that helps an organism survive in its environment; a characteristic of an organism that state (of matter) - phase in which matter can exist; solid, liquid, gas and plasma are the states of matter. constant - factor in an experiment that does not change. legend - key that explains what symbols on a map represent. low tide - lowest level of the ocean that occurs between the two high tides. P wave - seismic wave that causes particles of rock to move in a back-and-forth direction. microorganism - very small organism that can be seen only with a microscope. thermocline - area of rapid temperature change in the ocean.  pinocytosis - cellular drinking. butte - flat-topped rock or hill formation with steep sides. desert - driest biome on Earth; receives less than 25 cm of rain each year and supports little plant life. greenhouse effect - heat-trapping process in which heat becomes trapped by cloud layers and cannot escape back into space;  exfoliation - breaking off of pieces of rocks that are parallel to the rock’s surface. permeable membrane - when materials will pass through a membrane. Back to: ScienceCalifornia ScienceGrade 6e-GlossaryA List of Words for Letter ‘A’ Click on to hear the word and definition abiotic factorany nonliving part of an ecosystem, such as water, minerals, sunlight, air, or soil soluble - able to be dissolved in water. metamorphosis - developmental process in which an animal changes drastically in body form between the juvenile            and the adult; solar wind - continuous stream of high-energy particles released into space in all directions from the sun’s corona. topography - surface, shape, size and composition of a land area. microbiology - study of microorganisms. permeability - capability of a porous substance or membrane to allow a fluid or gas to enter it; the measure or degree to which a analyze (analysis/plural-analyses) - to separate into parts in order to determine what something is or how it works; to examine in detail. - comparison of the effort force to the resistance for a machine; output force divided by input           force. assumption (assume) - is something taken for granted or accepted as true without proof. We thank the authors of the texts and the source web site that give us the opportunity to share their knowledge, abiotic factor - nonliving physical or chemical part of an ecosystem; describes the nonliving part of the environment, including water, rocks, light, and temperature.   batholith - huge, irregularly shaped intrusion that extends deep in the Earth’s crust.                                                                          2 lava - hot, molten rock that has reached the Earth’s surface. law of superposition - states that in layers of sedimentary rocks, younger rocks normally lie on top of older rocks if the layers sprain - tearing or twisting of a ligament or muscle. maritime polar - air mass that forms over the Pacific Ocean and brings cool air in the summer and heavy snow in the winter. longshore current - overall direction and movement of water as waves strike the shore at an angle. autumnal equinox - first day of autumn. mature river - river that has been developing for thousands of years. liquid - phase in which matter has no definite shape but does have a definite volume.  cumulus cloud - puffy cloud with a flat bottom that forms at an altitude of 2.4 to 13.5 kilometers.                           species that live in a given area.                                                                                                                    the Earth’s crust and its movements. septum - thick wall of tissue that separates the heart into right and left sides. glacial drift - rock material carried and deposited by glaciers. nonmetal - element that is a poor conductor of heat and electricity, has a dull surface, low melting point, is brittle, breaks easily malleability (malleable) - ability of a substance to be hammered into thin sheets without breaking.                            pathogen - specific cause of disease.  (EX-bacteria or virus)                                     Kelvin (K) - temperature scale (SI unit) that has its zero at absolute zero where matter stops moving; water freezes at 273.15o  and magma - hot, molten rock deep inside the Earth.                 composition of the rock material. precision - degree of accuracy or exactness of a measurement or tool. Earth’s position in its orbit around the sun. phagocytosis - cellular eating.

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