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CH.1 ps
CH.1
Term | Definition |
---|---|
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. |