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PS Chapter 1

TermDefinition
Science The study of the natural world.
Observing Using 1 more senses to gather info.
Inferring Guessing based on reasoning from what you already know.
Predicting Making a forecast based on past experience or evidence.
Chemistry Study of matter & how it changes.
Physics Study of matter energy motion forces & their interactions.
Scientific Inquiry Different ways scientists study the natural world.
Hypothesis A possible answer to a scientific question or explanation for a set of observations.
Parameter Factor that can be measured in an experiment.
Manipulated Variable One Variable parameter scientists change.
Responding Variable Variable parameter that is expected to change because of the manipulated variable.
Controlled Experiment Experiment which only a parameter is manipulated at a time.
Data Facts.
Communicating Sharing ideas.
Model Is a picture or a representation of an object or process.
Scientific Theory Is a well tested explanation for wide range of observations or experimental results.
Scientific Law Is a statement that describes what scientists expect to happen.
SI International System of Units.
Weight Is a measure of force of gravity on you.
Mass is a measure of the amount of matter an object contains.
Estimate Is an approximation of a number based on reasonable assumptions.
Accuracy refers to how close a measurement is to the true or actual value.
Reproducibility refers to how close a group of measurements are to each other.
Significant Figures in a measurement include all digits.
Precision is a measure of the exactness.
Graph Picture of data
Horizontal axis left to right
vertical axis up and down
origin two axis cross
coordinate pair of numbers used to determine position
data point point showing the location of intersection
line of best fit smooth line that reflects pattern
linear graph data points yielding a state line
slope steepness of graph
nonlinear graph a line graph were data points are not in a straight line
Created by: Alexle