7th Grade Word List: Science
Words for students of 7th Grade, the page is for science words (List 1), which are essential vocabulary for 7th Grade academic classes.
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| 7th Grade: 7th Grade Word List: Science (List 1) |
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aerobic 
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enhancing respiratory and circulatory efficiency; depending on free oxygen or air | |
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anaerobic
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living or active in the absence of free oxygen | |
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asexual reproduction
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reproduction without the fusion of gametes | |
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asteroids
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any of numerous small celestial bodies that revolve around the sun | |
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carbon cycle
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a thermonuclear reaction in the interior of stars; the organic circulation of carbon from the atmosphere into organisms and back again | |
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cell organelles
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specialized part of a cell; analogous to an organ | |
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chromosome
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a structure in the cell nucleus that contains DNA | |
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density
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thickness; quantity of something per unit measure, especially per unit length, area, or volume | |
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diffusion
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act of dispersing or diffusing something | |
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gene
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a segment of DNA that is involved in producing a polypeptide chain | |
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heredity
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genetics; inheritance; genetic transmission of characteristics from parent to offspring | |
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homeostasis
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metabolic equilibrium actively maintained by several complex biological mechanisms that operate via the autonomic nervous system to offset disrupting changes | |
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meiosis
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cell division that produces reproductive cells in sexually reproducing organisms | |
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mitosis
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cell division in which the nucleus divides into nuclei containing the same number of chromosomes | |
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organ
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natural part or structure in animal or plant, capable of performing some special action | |
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organisms
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discrete and complete living thing, such as animal, plant, fungus or microorganism | |
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osmosis
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diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal | |
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photosynthesis
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chemical combination brought about by the action of light | |
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qualitative change
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changes in kind or type | |
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quantitative change
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an alteration in the number | |
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respiration
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breathing; process of inhaling and exhaling; oxidative process occurring within living cells | |
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sexual reproduction
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reproduction involving the union or fusion of a male and a female gamete | |
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species diversity
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the variety of species in a given region or area | |
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tissue
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groups of cells that make particular parts of the body; soft thin paper | |
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transpiration
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the process of giving off or exhaling water vapor through the skin or mucous membranes; the emission of water vapor from the leaves of plants | |
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transport
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carry from one place to another; carry away; deport | |
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