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CH.1 ps


science study of the natural world
observing using one or more senses to gather information
inferring explaining your observation
predicting making a forecast of what will happen in the future
chemistry the study of the properties of matter and how matter changes.
physics is the study of matter, energy , motion , and forces
scientififc Inquiry different ways scientists study natural world
Hypothesis an answer to a scientific question
parameter a factor that can be measured in an experiment
manipulated variable is the independent variable in the experiment.It's the only one you can change.
responding variables expected to change because of the manipulated variable
controlled variables an experiment in which only one variable is manipulated at a time
data are the facts, figures and other evidence gathered through observations
Qualitative is using description
quantitative data is measured with numbers
communicating is sharing ideas , and conclusions with others through writing and speaking
model is a picture, diagram, computer image , or other representation of an object or process.
Scientific theory well tested for a wide range of observations or experimental results.
Scientific Law statement that describes what scientists expect to happen every time under a particular set of conditions.
Graph a picture of information from a data table that shows
horizontal axis (x axis) a line that runs left to right along the bottom of a graph , on which manipulated variable(independent variable ) is labeled.
vertical axis (y axis) a line that runs up and down along the side of a graph on which the responding variable or (dependent variable) is labeled.
orgin the (0,0) point on a line graph
coordinate a pair of numbers used to determine the position of a point on a graph.
data point a point on a graph showing a location of a piece of data.
line of best fit a smooth line that reflects the general pattern in a graph.
Linear graph a line graph which the data points yield in a straight point.
slope the steepness of a line on a graph equal to its vertical change divided by it's horizontal change.
Non Linear graph a line graph in which the data points do not follow in a straight line.
Created by: helen lawendy