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Earth Science Vocab Unit 1
Vocabulary Terms
18
Science
9th Grade
09/18/2011

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Term
universe
Definition
all the matter, time, energy and space
Term
observation
Definition
is the perceptance of some aspect of the environment by one or more human senses-sight, hearing, touch, taste or smell
Term
instrument
Definition
is a human made device that extends the senses beyond their normal limits, thus enabling them to make observations that would otherwise be impossible or highly inaccurate
Term
inference
Definition
is an enterpretation of an inference
Term
classification
Definition
when scientists group together similiar observations and inferences to make the study of objects and events in then environment more meaingful or easier to understand
Term
measurement
Definition
is a means of expressing an observation with greater accuracy or percision
Term
mass
Definition
the amount of matter in a object
Term
volume
Definition
the amount of space a object occupies
Term
precent deviation
Definition
when the amount of terror is expressed as a precentage
Term
density
Definition
the concentration of matter in a object
Term
rate of change
Definition
years, hours or seconds
Term
cyclic change
Definition
many changes in the environment occur in some oredly fashion in which the events constantly repeat
Term
prediction
Definition
is a type of infference about the conditions and behavior of the environment in the future
Term
natural hazard
Definition
is a non human related object , process, or situation, that has the possiblity of causing the loss of life, personal injury or loss of property
Term
interface
Definition
where energy is usually exchanged
Term
dynamic equalibrium
Definition
environmental equalibrium resulting from opposing forces or actions balancing out
Term
natural reasources
Definition
the materials and energy sources found in the environment that the humans use in their daily lives
Term
pollution
Definition
of the environment occurs whe the concentration of any sunstance or form of energy reaches a porportionthat adversely affects people or their property or other life forms 
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