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chapter one definitons
word and definition
15
Science
7th Grade
09/26/2011

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Term
Scientific Methods 
Definition
A process that uses certain steps to solve problems .
Term
Hypothesis 
Definition
A prediction that can be tested.
Term
Control
Definition
The standard of comparison in an experiment; cannot change. 
Term
Variable
Definition
Something in an experiment that can change.
Term
Theory
Definition
An explanation of things and events based on scientific knowledge; the result of many observations and experiments. 
Term
Scientific Law
Definition
A statement about how things work in nature. 
Term
Organism
Definition
Any living thing.
Term
Cell
Definition
The smallest unit of an organism that carries on the function of life. 
Term
Homeostasis
Definition
Maintaining the proper conditions inside an organism. 
Term
Spontaneous generation
Definition
The early theory that living things could come from nonliving things; disproved by Louis Pasteur in the Mid-1800's.
Term
Biogenesis
Definition
The theory that living things could only come from other living things.
Term
Phylogeny 
Definition
The evolution of an organism. 
Term
Kingdom
Definition
The first and largest category.
Term
Binomial Nomenclature
Definition
The two- word system used by Linnaeus to name species. 
Term
Genus 
Definition
A group of similar species.
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