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100
a final decision based on investigation and evidence
What is a conclusion?
100
a substance that cannot be broken down by average chemical and physical processes
What is an element?
100
an idea that can be tested by a scientific investigation
What is a hypothesis?
100
information gathered by the five senses or through measurement
What is an observation?
100
a well-supported dominant explanation of observed phenomena that predicts, explains and accounts for scientific laws
What is a theory?
200
a negatively charged subatomic particle that moves in an orbital shell outside an atom's nucleus
What is an electron?
200
a variable in an experiment that does not change throughout the course of the experiment
What is a constant?
200
a large collection of data in a computer organized so specific data can be found and used easily
What is a database?
200
the central portion of the atom containing protons and neutrons
What is the atomic nucleus?
200
smallest particle of an element; the building block of matter
What is an atom?
300
the individual/personal perspective on issues or data that affects how we see and report our observations
What is a bias?
300
a conclusion reached by using what we have observed and not specifically stated, shown or written
What is an inference?
300
a question used to focus the purpose of a scientific investigation and the procedures used to complete it
What is a research question?
300
an experiment that attempts to model an actual process or event
What is a simulation?
300
a computer file organized in rows and columns, where the data can be used to do calculations and prepare graphs (Excel is an example of one of these)
What is a spreadsheet?
400
a factor that changes in an experiment
What is a variable?
400
the number of observations or data (example: 100 people surveyed...)
What is sample size?
400
a variable that is isolated for study in an experiment and that the experimenter manipulates
What is the independent variable?
400
the factor in an experiment that changes depending on the change in the independent variable
What is a dependent variable?
400
a variable that is kept the same from trial to trial
What is a controlled variable?
500
a positively charged particle emitted from a radioactive element that can pass through thin sheets of metal
What is an alpha particle?
500
state of matter
What is a phase?
500
an investigation in which all variables are identified and recorded so that the investigation can be repeated
What is a systematic investigation?
500
particle within an atom's nucleus that has no charge
What is a neutron?
500
the temperature at which a substance begins to change phases from solid to liquid
What is the melting point?