| A | B |
|---|
| Physical Science | the study of matter and energy and their interaction with each other |
| significant digits | numbers that result from measurement with an instrument |
| interpolation | when you use the data you have to find another value in between your data by estimating |
| extrapolation | any place outside the limits of your data |
| technology | the application of scientific knowledge to improve the quality of human life |
| model | an idea, system, or structure that representswhatever you are trying to explain |
| critical thinking | a process that uses certain skills to solve a problem |
| observation | the process of using your senses to gather information |
| hypothesis | a testable prediction |
| dependent variable | the factor that is forced to change because the independent variable is changed |
| independent variable | the factor adjusted by the experiment |
| constant | a factor that effects all samples equally |
| control | a standard for comparison |
| Scientific Law | a "rule of nature" that sums up related observations and experimental results to describe a pattern in nature |
| experiment | an organized procedure for testing a hypothesis |
| theory | an explanation based on many observations supported by experimental results |
| meter | the SI unit of length |
| volume | the amount of space occupied by an object, SI- m^3 |
| derived units | a unit of measurement formed by combining other units of measurement |
| liter | unit of liquid volume |
| mass | the amount of matter in an object, SI- kg |
| kilogram | SI unit of mass- 1000 grams |
| density | how tightly packed a substances molecules are, m/v |
| time | the interval between two events, SI- second |
| second | SI unit of time |
| kelvin | SI unit of temperature, 0K=absolute zero |
| SI | an abbreviation for the International System of Units- the standard system of measurement wordlwide |
| standard | an exact quantity that people agree to use for comparison |
| graph | a visual display of info or data |
| property | a feature of matter or the way it acts |
| science | a process of studying our world and the knowledge gained through this process |
| problem | a question one wants to answer but does not yet know how to solve |
| inference | a judgement based on reasoning from evidence |
| scientific notation | a convenient way to express very large or very small numbers |
| precision | the number of significant digits measured by a specific instrument |
| meniscus | the curved surface of a fluid in a graduated cylinder |
