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IGHS Winkels
Physical Science Chapter 1 (old)
| Term | Definition |
|---|---|
| Science | a system of knowledge and the methods you use to find knowledge |
| Technology | the use of knowledge to solve practical problems |
| Physical Science | covers two main areas, chemistry and physics |
| Chemistry | the study of the composition, structure, and properties, and reactions of matter |
| Physics | the study of matter and energy and the interactions between the two through forces and motion |
| Atoms | building blocks that make up matter |
| Problem | a question to be considered, solved, or answered |
| Hypothesis | a possible explanation for a problem using what you know and observe. Must be testable. |
| Dependent Variable | what you measure in the experiment and what is affected during the experiment |
| Independent Variable | the variable you have control over |
| Constant | a factor that does not change when others do |
| Control | the standard by which the test results can be compared |
| Scientific Theory | a well-tested explanation for a set of observations or experimental results |
| Scientific Law | a statement that summarizes a pattern found in nature |
| Scientific Model | make it easier to understand things that might be too difficult to observe directly |
| Scientific Notation | a way of expressing a value as the product of a number between 1 and 10 and a power of 10 |
| Precision | a gauge of how exact a measurement is |
| Accuracy | the closeness of a measurement to the actual value of what is being measured |
| Data Table | relates two variables-a manipulated variable and a responding variable |
| Line Graph | is useful for showing changes that occur in related variables |
| Slope | the ratio of a vertical change to the corresponding horizontal change |
| Circle/Pie Graph | shows how a part or share of something relates to the whole |
| Bar Graph | used to compare a set of measurements, amounts, or changes |
| Direct Proportion | a relationship in which the ratio of two variables is constant |
| Inverse Proportion | a relationship in which the product of two variables is a constant |
| 3 branches of natural science | Physical Science, Earth and Space Science, Life Science |
| 2 main branches of physical science | Chemistry and Physics |
| PHEACR | Problem, Hypothesis, Experiment, Analyze, Conclude Repeat |
| Meters | measures distance |
| Liters | measures volume |
| Grams | measures mass |
| Fahrenheit | water freezes @ 32 degrees water boils @ 212 degrees |
| Celsius | water freezes @ 0 degrees water boils @ 100 degrees |
Created by:
Winkels
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