job. heliocentric -  sun-centered. harbor - sheltered area of water where ships may anchor safely. motion - change of position over time. fat - energy-rich organic compound made up of carbon, hydrogen and oxygen, that is solid at room temperature. neutron star - rapidly spinning core of a massive star that remains after a supernova explosion. x-ray (x ray, X-ray, X ray) - electromagnetic radiation having a wavelength shorter than that of ultraviolet light but longer than food chain - transfer of energy through various stages as a result of feeding patterns of a series of organisms. elevation - height of an object above sea level.                                                                                                             porosity - percentage of the total volume of a rock or sediment that consists of open spaces. combined; a substance made up of at least two different elements held together by chemical bonds          that can only be neritic zone - ocean area that extends from the low tide line to the end of a continental shelf. spinoff - commercialized product incorporating NASA technology or “know how” that benefits the public.  law of conservation of matter - states that matter is neither created nor destroyed, only changed in form.                                              12 response - some action or movement of the organism brought on by a signal.                                                                 eukaryotic cell (eukaryotes) - more complex type of cell with a true nucleus.  (kingdoms:  Protista, Fungi, Plantae, and Animalia) (EX - Milky Way)  maria - dark, broad, smooth, lowland area on the moon.                                                                                                                     13 phagocytosis - cellular eating. melting point - temperature at which a solid changes to a liquid. geologic column - ordered arrangement of rock layers that is based on the relative ages of the rocks and in which the oldest rocks batholith - huge, irregularly shaped intrusion that extends deep in the Earth’s crust.                                                                          2 sustainable - managing of certain natural resources so that they are not harmed or used up.                 substance. cellulose - forms the rigid cells walls of plants; organic compound made of long chains of glucose molecules.                               3 soil conservation - method to maintain the fertility of the soil by protecting the soil from erosion and nutrient loss. Use our spelling lists to form a science glossary for your 6th grade classroom! organisms and climatic factors.  verify - repeat own experiment. fern - seedless, vascular, fringe-leafed plant that grow in cool, wooded environments. budding - reproductive process in yeast, in which a new yeast cell is formed from a tiny bud. validate (valid; validity) - others repeat someone else’s experiment with same results. life cycle - entire sequence of events in an organism’s growth and development.  xylem - vascular tissue that carries water and dissolved minerals from the soil to the leaves. chlorofluorocarbons (CFCs) - group of chemical compounds used in refrigerators, aerosol sprays, and foam packaging that sea cliff - steep face of rock produced by wave erosion. the Earth’s crust and its movements. amino acid - building block of protein; an organic molecule containing an amino (-NH2) and a carboxyl(-COOH) group from which proteins are synthesized. abyssal plain - large, flat, almost level area of the deep-ocean basin. law of conservation of energy - states that no matter how energy is transferred or transformed, all of the energy is still present in orbit - path one object takes when moving around another object in space. colonial - unicellular organisms that live independently but clustered side by side. turbidity current - flow of water down the continental slope that is very dense because of the sediments it carries. eruptions. consumer - organism that feeds on other organisms for food.  (heterotroph) ventricle - lower chamber of the heart. photoelectric effect - production of an electric current when photons of certain frequencies of light have enough energy to knock sepal - leaf-like structures at the base of a flower. biodiversity - existence of a wide range of different species in a given area or specific period of time. inference (infer) - conclusion based on an observation. land degradation - process by which human activity and natural processes damage land to the point that it can no longer support lake - filled or partially filled basin of fresh or salt water surrounded by land. variable - factor being tested in an experiment; an event, condition, or factor that can be changed or controlled in order to study or solar nebula - rotating cloud of gas and dust from which the sun and planets formed. climate - pattern of weather that occurs in a particular area over a long period of time. beach - area of the shoreline that is made up of deposited sediment. scatter plot graph - tool that displays data from two related sets as ordered pairs; shows a set of similar things. Units in the Life Science domain also address environmental science and health topics. radius - is a line segment connecting the center of the circle to a point on the circumference. needs are lowered; in amphibians, involves burying themselves in mud or leaves until temperatures become warmer. axis (plural-axes) - imaginary line drawn through the center of a body around which the body rotates or spins; a reference to the longitude - measure of distance east and west of the prime meridian. mineral - naturally occurring, inorganic solid that has a definite chemical composition and crystal shape. shear stress - stress that occurs when forces act in parallel but opposite directions, pushing parts of a solid in opposite directions. recycling - process of recovering valuable or useful materials from waste or scrap. thermal energy - total kinetic energy of a substance’s atoms.                 its environment.  metazoan - multicellular animals that cause scabies and pubic lice. thunderstorm - usually brief, heavy storm that consists of rain, strong winds, lightning and thunder. meiosis - form of cell division that halves the number of chromosomes in a male and female sex cell as they form.  vein - blood vessel that carries blood from the body back to the heart. taiga - cold region of cone-bearing evergreen trees that lies just below the tundra and is the Earth’s largest terrestrial biome. lung - respiratory organ that absorbs oxygen from the air. Newton (N)  - SI unit for force. large intestine - organ in the digestive system in which water is absorbed and undigested food is stored. Knowing these vocabulary words aids in reading comprehension and adds precision to your child’s writing and speaking. tornado - destructive, rotating column of air that has very high wind speeds and that may be visible as a funnel-shaped cloud. reacts to produce new compounds.  heat of fusion - amount of heat energy required to convert a unit mass of substance from a solid to a liquid           through melting at a process; a single-stranded nucleic acid consisting of a phosphate group and one of four nitrogenous bases that encodes investigation - procedure that is carried out in order to observe a response caused by a stimulus; not a complete experiment.  P wave - seismic wave that causes particles of rock to move in a back-and-forth direction. skepticism (skeptic, skeptical) - habit of mind in which a person questions the validity of accepted ideas. Vocabulary Unit for SPACE EXPLORATION 1 of 26th Grade Science Visual Vocabulary / Word Wall/ Vocabulary Cards. model - pattern, plan, representation, or description designed to show the structure or workings of an object, system, or concept. Click 'Continue' to play with this list or enter your own, Challenges for French/Haitian Creole-Speaking ELLs, Efficacy Study: Help Students Build Reading Comprehension, VocabularySpellingCity Acquires WriteSteps, White Paper on Effective Vocabulary Instruction. VocabularySpellingCity makes studying sixth grade science easier by providing extensive targeted middle school science word lists, and other sixth grade spelling lists.                 electrons out of atoms of a metal plate. maintenance, and reproduction. happened in the experiment. International System of Units (SI) - system of units used in science; metric system. without the involvement of gametes.  passive transport - movement of materials through a membrane without any input of energy. conifer - cone-bearing trees and shrubs that usually keep their leaves or needles during all the seasons of the year. exfoliation - breaking off of pieces of rocks that are parallel to the rock’s surface. crest - highest point of a wave.  magnitude - measure of a star’s brightness. thermal conduction - transfer of energy as heat through a material. isthmus - narrow strip of land connecting two larger landmasses. cell membrane - thin, flexible envelope of protoplasm that forms the outer covering of an animal cell and that is inside the cell mountain - area of significantly increased elevation on Earth’s surface, usually rising to a summit. halophile - Archaea that tolerate salty surroundings. bronchus (plural-bronchi) - tube that branches off from the trachea. cliff - steep face of rock and soil.                                                                  Haversian canal - passageway running through the thick bone, containing blood vessels and nerves.                                       10 echinoderm - invertebrate sea animal with a spiny skeleton, a water vascular system, and tube feet. supergiant star - star with a diameter up to 1 000 times the diameter of the sun. humus - dark, organic material formed in soil from the decayed remains of plants and animals. meltwater - stream of water formed by the melting of ice as a valley glacier moves.                                                      ice age - period of time during which surface temperatures drop significantly and huge ice sheets spread out beyond the polar balanced forces - describes forces acting on an object that cancel each other. alloy - solid metal dissolved in another solid metal. toxic - poisonous. length all over the world; the vernal equinox occurs March 20 or 21 and the autumnal equinox occurs September 20 or 21. theory of continental drift - idea that says that all of the present-day continents were joined together in one large landmass that meteoroid - relatively small, rocky body that travels through space. waxing-gibbous - phase of the moon between one-half and full when the lighted area of the moon appears to grow larger. primary succession - ecological succession that begins in a place that does not have soil. artesian spring - spring whose water flows from a crack in the cap rock over the aquifer. solar flare - explosive increase in brightness near sunspots on the sun’s surface that releases great amounts of energy into space. outcome variable - factor being measured or observed in an experiment;  a factor that responds to, or depends on, other factors.  What does Science glossary 6th grade mean ? quark - particle that makes up all subatomic nuclear particles.                                                                                                               mutualism - interaction between two species in which both benefit. amphibians, involves hiding in cooler, more humid ground. herbivore - animal that eats only plants.  estuary - shoreline area where fresh water from a river mixes with salt water from the ocean. volcanic ash - rock particles more than 0.25 millimeters but less than 5 millimeters in diameter that are blown into the air during percolation - movement of water through rock or soil. new cells. experiment with the variable, but the variable is left out. thermal expansion - increase in the size of a substance in response to an increase in the temperature of the substance. nuclear membrane - thin membrane that separates the nucleus from the protoplasm of the cell. transpiration - loss of water vapor through the stomata of a leaf. hill - raised area or mound of land.                 oceanic plates are moving away from each other; area where new crustal material may be released. changed by increases in temperature and pressure. that extends above the photosphere and above the sun’s edge as seen from Earth. fringing reef - type of coral reef that touches the shoreline of a volcanic island.  open cluster - group of stars that are close together relative to surrounding stars. 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