vocabulary for chapter 1

Term Definition
Scientific inquiry the different ways scientists study the natural world
hypothesis a possible answer to a scientific question or explanation for a set of observations
parameter a factor that can be measured in a experiment
manipulated variable the variable parameter changed on purpose
responding variable the variable parameter that changes because of the manipulated variable was changed.
controlled experiment a experiment where one parameter is changed at a time
qualitative data recorded as notes in a journal
quantitative data consists of measurements
communicating sharing ideas and conclusions with others with speaking and writing
model a picture, diagram, computer image, or other representation of an object or process
scientific theory a well-tested explanation of a wide range of observations or experimental results
scientific law a statement of what scientists think is going to happen under a particular set of conditions
data facts, figures, and other evidence gathered during an experiment
science study of the natural world
observing using one or more senses to gather information
inferring explaining your observations
predicting making a forecast based on the past experiences or evidence
chemistry the studies of the properties of matter and how it changes
physics the study of matter, energy, motion, and forces and how they interact
graph a picture of your data
horizontal axis the line that runs left to right also known as x-axis
vertical axis the line that runs up and down also known as y-axis
origin the point where the two axes cross
coordinate a pair of numbers used to determine the position of a point on a graph
data point the point showing the intersection
line of best fit a smooth line that reflects the general pattern of a graph
linear graph a line graph where the data points are on a straight line
slope the steepness of the graph line
nonlinear graph a line graph where the data points do not fall on a straight line

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