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Chapter 1 Vocabulary
N/A
26
Science
9th Grade
09/11/2012

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Term
Science
Definition
Organized way to use evidence to learn about the natural world
Term
Observation
Definition
Using your senses to gather information is an orderly way
Term
Data
Definition
Information gathered from observation
Term
Inference
Definition
A logical understanding based on prior knowledge
Term
Hypothesis
Definition
An educated guess (explanation) based on scientific information
Term
Controlled Experiment
Definition
An experiment in which one variable (condition) is changed to see if a hypothesis is true
Term
Theory
Definition
When a hypothesis is proved many times it becomes a theory. (A well tested explanation that has been proved correct by other scientists)
Term
Biology
Definition
The study of living things
Term
Biosphere
Definition
Part of the earth that has all the ecosystems
Term
Ecosystem
Definition
Community and its non-living surroundings
Term
Community
Definition
Populations that live together in a specific area
Term
Population
Definition
One type of organism that live in a certain area (Duxbury)
Term
Organism
Definition
An individual living thing
Term
Cells
Definition
Smallest unit of life
Term
Tissues
Definition
Group of one or more cells that perform a function
Term
Organ
Definition
Group of tissue that performs a job (Heart, Lungs)
Term
Organ System
Definition
Group of organs (Circulatory, Respiratory)
Term
Molecules
Definition
Group of atoms (Water-H20) two or more atoms
Term
Atoms
Definition
The beasic unit of matter. The pieces(particles) are made up of portons, neutrons, and electrons
Term
Nucleus
Definition
A particle inside an atom with no charge
Term
Electron
Definition
A particle inside an atom with a negative charge
Term
Proton
Definition
A particle inside an atom with a positive charge
Term
Element
Definition
A pure substance made of one type of atom (Hydrogen)
Term
Isotopes
Definition
An atom with different number of neutrons
Term
Metric System
Definition
A decimal system used by scientists to collect data and performing experiments. Multiples of ten (10) are used.
Term
Microscope
Definition
Devices used to magnify (enlarge) images
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