accuracy
an indication of how close a measurement is to the correct result
applied research
research that results in a product that can be sold for profit
basic research
research that expands knowledge in a particular area
chemistry
the study of the structure, properties, and interactions of materials and the changes they undergo
control
a quantity in an experiment that remains unchanged or constant
density
the mass of a substance per unit of volume
dependent variable
the experimental factor that changes in response to a change in the independent variable
empirical evidence
observational evidence
gradation
scale markings that denote equal units of measure
gram
base unit for measuring mass in the metric system
hypothesis
a proposed explanation for a scientific problem that itself can be tested by experimentation
kilogram
standard unit of mass in the metric system
independent variable
the experimental factor that is changed by the scientist
liter
standard unit for liquid volume in the metric system
mass
the amount of matter in an object
matter
anything that has mass and occupies space
meniscus
the curved top surface of a liquid column
meter
standard unit of length in the metric system
physics
the study of matter and energy and how they interact
precision
the degree to which a measurement can be replicated
science
the systematic study and analysis of facts
scientific method
a process to test a proposed solution to a problem
tare
to adjust the balance scale to read zero
volume
space occupied, measured in cubic units
weight
the force of gravity acting on the mass of an object