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Unit 1 - In The Lab
Vocabulary
| Term | Definition |
|---|---|
| Scientific Method | a method of research in which a problem is identified, relevant data are gathered, a hypothesis is formulated from these data, and the hypothesis is empirically tested |
| Hypothesis | a possible explanation for a set of observations or answer to a scientific question; must be testable |
| Experiment | a test, trial, or tentative procedure; an act or operation for the purpose of discovering something unknown or of testing a principle, supposition, etc.: |
| Dependent Variable | the factor that changes as a result of changes to the independent variable in an experiment; also called responding variable |
| Independent Variable | the one factor that a scientist changes during an experiment; also called manipulated variable |
| Constant | not changing or varying; uniform; regular; invariable |
| Control | a person, group, event, etc., that is used as a constant and unchanging standard of comparison in scientific experimentation |
| Bias | a subjective belief that affects a person’s attitude toward something; an error in the design of an experiment that affects the results of the experiment |
| Source of error | cause the results of a research study to interpreted incorrectly. Human Errors when the researcher simply makes a mistake Systematic Errors caused by the way the experiment was conducted or the |
| Theory | proposed explanation whose status is still conjectural and subject to experimentation |
| Scientific Law | a statement based on repeated experimental observations that describes some aspect of the universe |
| Model | a representation of a complex object or process, used to help people understand a concept that they cannot observe directly |
| Standard | a reference that is used to calibrate measurements |
| SI | International System of Units – the metric system |
| Volume | The amount of space something occupies |
| Mass | a measure of how much matter is in an object |
| Density | measure of how much mass of a substance is contained in a given volume d = m/v |
| Deci- | prefix meaning one tenth. 0.1 |
| Centi - | prefix meaning one hundredth 0.01 |
| Milli - | prefix meaning one thousandth 0.001 |
| Micro - | (Greek letter μ) prefix meaning “one millionth” |
| Nano - | in the names of units of measure it has the specific sense “one billionth” |
| Kilo – | prefix meaning “thousand” |
Created by:
ameissner
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