PhysicalSci-Chapter 1 Vocabulary
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| observation | using tools and senses to document facts, used to make hypothesis and predictions
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| data | recorded observations / facts
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| hypothesis | a written answer for a scientific question that includes a prediction that is testable
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| experiment | a controlled study used to test a hypothesis by testing the effects of one thing on another
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| independent variable | the condition or factor that is changed by the scientists, goes on the x-axis of a graph
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| dependent variable | data being measured and collected, goes on the y-axis of a graph
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| constant | the conditions of an experiment that do not change
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| pie graph | graph used to compare proportions (percentages) in different categories such as water use by consumers
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| bar graph | graph used to compare different categories for a continuous variable such as average household water use by county
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| line graph | graph used to illustrate the data of an independent variable that is collected continuously such as heart rate over time or rate of ice melting
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| scientific methods | the pattern of investigation procedures
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| variable | something in an experiment that changes, either on purpose or as the result of changing something else.
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| experimental control | the trial or group that is used to compare the experimental trial or group to. It is often viewed as "normal conditions"
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| bias | this occurs when a scientist's expectations change how the results of an experiment are analyzed or how the conclusions are made
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| model | this represents an ides, event, or object to help people better understand it.
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| volume | the amount of space occupied by an object
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| matter | anything that has mass and takes up space
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| mass | a measurement of the amount of matter in an object
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| density | the ratio of mass to volume that tells the amount of matter in a given volume
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| x-axis | the horiztontal axis of a graph that corresponds to the independent variable.
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| y-axis | the vertical axis of a graph that corresponds to the dependent variable
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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