Scientific Method/Equipment/Metric System Flashcard

observation
collecting information
qualitative data
acquire information by using senses
quantitative data
uses numbers: measurements and counting
problem statement
a question to ask about the relationship between two different things
independent variable
controlled and known by the scientist
dependent variable
not known in advance or predetermined by the scientist
system
a specific portion of matter in a given region of space that has been selected for study during an experiment or obeservation
hypothesis
a testable statement->use “If then…”
control
what we compare to; no treatment part of the experiment; nothing is done
model
sometimes a physical object but also an explanation of how phenomena occur and how data or events are related
energy
the base unit is joule; symbol=J
mass
the base unit is gram; symbol=g
length
the base unit is meter; symbol=m
volume
the base units are Liter or cubic centimeter; symbols= L and cm^3
temperature
base units are celcius and Kelvin; symbols= degree C or K
pressure
base units are Pascal and atmosphere; symbols Pa and atm
meniscus
the half-moon ring on a graduated cylinder
time
base units are seconds; symbol=s

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