science and measurement test Flashcards
law
statements that describe patterns in nature that are based on repeated observations
theory
statements that explain why the observed patterns in nature occur, supported by a large body of evidence
(why the laws work)
model
representation of an object or event that can be studied to understand the real thing
observation
description of matter made using senses
inference
conclusion based upon one or more observations
scientific method
way to ask and answer scientific questions by making observations and doing experiments
state the question read, reasearch, investigate form a hypothesis design an experiment make observations draw conclusions
experiment
a procedure that establishes the validity of a hypothesis
hypothesis
an idea, guess or explanation that you then test through study and experimentation
length
a measure of how long something is
m
mass
a measure of how much matter is in an object (g)
volume
the amount of space taken up by a substance in a three-dimensional container (mL / m^3)
independent variable
controllable variable, changing/testing to see how it affects dependent variable
dependent variable
non controllable variable, depends on independent variable with its outcome
accuracy
how close the measurements are to the target amount
precision
how close the measurements are to each other when repeated, and a fineness of an individual measurement
