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21 Cards in this Set

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Science
Science is an organized way of gathering and analyzing evidence about the natural world
What are you studying?
Observation
The act of noticing and describing a bitch or processes and careful orderly way
Inference
Is a logical interpretation based on what scientists already know
Hypothesis
Is a scientific explanation for a set of observations that can be tested in ways that support or reject it
controlled experiment
Whenever possible hypothesis should be tested by an experiment in which only one variable is changed all other variables should be kept unchanged or control this type of experiment is called control variable
Independent variable
the variable that is deliberately changed is called the independent variable
Dependent variable
The variable that is observed and that changes in response to the independent variable is called the dependent variable
Control group
Typically an experiment that is divided into control and experimental groups
Data
Scientists make detailed records of experimental observations gathering information call data
Quantitive data
Quantity status bar numbers obtained by counting or measuring
Qualitative data
Are descriptive and involve characteristics that cannot usually be counted
Theory
That ties those hypothesis together
Bias
Is it particular preference or point of view that is personal rather than scientific
Biology
Is the study of life
DNA
All organisms for the complex information they need to leave growing reproduce in a genetic code written in a molecule call dna
stimulus
Is a signal to which an organism respond
Sexual reproduction
And sexual reproduction cells from two parents unite to form the first cell of a new organism
Asexual reproduction
In which a single organism produces offspring identical to itself
Homeostasis
All organisms need to keep their internal environment relatively stable even when external conditions change dramatically this condition is called homeostasis
Metabolism
The combination of chemical reactions through which an organism builds up or breaks down material is called metabolism
Biosphere
All forms of life on Earth are connected to the biosphere which literally means living planet