7th Grade Science Vocab Crossword

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Evidence based on observation rather than a theory: Empirical Evidence
scientific procedure thats done to make a discovery: Experiment
Facts and statistics collected together for reference or analysis: Data
measure of somethings change over a period of time: amplitude
the distance between two different crests: wave length
a frequency equal to one cycle per second: hertz
What EM waves are classified on: Electromagnetic Spectrum
unable to see through; not transparent: opaque
to disperse: scattering
a degree of heat: temperature
type of energy associated with the vibration of matter: Sound energy
energy stored in the bonds of chemical compounds: Chemical Energy
energy released during nuclear fusion: nuclear energy
either of 2 units of energy: calorie
a thing or substance used for insulation: insulator
the emission of energy as EM waves: radiation
parts of an environment that are living: biotic factor
parts of an ecosystem that is not living: abiotic factor
a comfortable or suitable position in life: Niche
an organism that breaks up organic material: Decomposer
a system of interlocking food chains: Food web
an interaction between 2 organisms living closely together: symbiosis
environmental conditions that limit growth: Limiting Factor
mouth of a large river where the tide meats the sea: estuary
a source of economic value that can't be replaced: non renewable resource
process of making an area more urban: urbanization
process where fertile land becomes desert: desertification
excessive richness of nutrients in a lake or other body of water: Eutrophication
cloudiness or haziness of a fluid caused by large numbers of individual particles invisible to the naked eye: Turbidity
the number and type of microorganisms contaminating an object or organism: microbial load
process by which radiation from the planets atmosphere warms the planets surface: Green house effect
fog or haze combined with smoke and other atmospheric pollutants: smog
a job of supervising or taking care of something such as an organization of property: stewardship
a part or aspect of something abstract: element
gental sheen or soft glow especially that of a partly reflective surface: luster
a sharp division or split: cleavage
lift up or raise: uplift
gradual caving in or sinking of an area of land: subsidence
part of Earth between the core and crust: mantle
the innermost layer of the earth: core
hypothetical supercontinent that included all current land masses: pangea