| A | B |
|---|
| Scientific method | organized plan used for gathering, organizing, and communicating information |
| Observation | information obtained through the senses |
| Hypothesis | proposed answer to a question |
| Manipulated variable | the variable that causes a change in another variable |
| Responding variable | variable that changes in response to a change in the manipulated variable |
| Controlled experiment | Only one variable is deliberately changed at a time |
| Scientific theory | well-tested explanation for a set of observations or experimental results |
| Scientific law | statement that summarizes a pattern found in nature |
| Model | representation of an object or event |
| Scientific notation | way of expressing a value as the product of a number between 1 and 10 and a power of 10 |
| Length | straight-line distance between two points |
| Mass | amount of matter in an object |
| Volume | amount of space taken up by an object |
| Density | ratio of a material's mass to its volume |
| Conversion factor | ratio used to convert a quantity from one unit to another |
| Precision | a gauge of how exact a measurement is |
| Significant figures | all the digits that are directly measured, the last digit is estimated |
| Accuracy | closeness of a measurement to the true value of what is measured |
| Thermometer | instrument that measures temperature |
| Slope | steepness of a line |
| Direction proportion | relationship between two variables in which their ratio is constant |
| Inverse proportion | product of 2 variables is a constant when all other variables are held constant |
