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PS chapter 1

TermDefinition
science the study of the natural word
observing using one or more senses to gather information
inferring guessing based on reasoning from what you already know
predicting making a forecast on past experience or evidence
chemistry matter's properties and changes
physics interactions of matter, energy, motion
scientific inquiry different ways to study the natural world
hypothesis possible answer or observation
parameter a factor measured in an experiment
manipulated variable purposely changed
responding variable expected to change
controlled variable only one parameter is changed
data facts, figures, and other evidence
communicating sharing ideas, conclusions through writing and speaking
model representation of object or process
scientific theory well tested explanation
scientific law what scientists expect to happen under certain conditions
Sl international system of units
weight a measure of the force of gravity on you
mass a measure of the amount of matter an object contains
estimate a approximate number base in reasonable assumptions
accuracy how close the measurement is to the true or actual time
reproducibility refers to how close a group of measurements are to each other
significant figures in a measurement include all of the digits, that are measured exactly, and one digit which has been estimated
precision a measure of the exactness of a measurement
graph a picture of information, shows relationship between variables
horizontal axis graph line that runs left to right
vertical axis graph line that runs up and down
origin the point where two axis meet
coordinate a pair of numbers used to find the position of a point on a graph
data point point showing the location of a piece of data
line of best fit smooth line that reflects a general pattern in a graph
linear graph a line graph in which the data points yield a straight line
slope steepness of the graph line
nonlinear graph a line graph in which the data points do not fall along a straight line
Created by: mdaisy1
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