| A | B |
|---|
| Hypothesis | generalization about data |
| Model | and explination of how phenomena occur |
| scientific method | a logical approach to solving problems by observing and collecting data, formulating hypothesis, testing hypothesis and formulation theories that are supported by the data |
| System | specific portion of matter ina given region of space that has been selected for study during an eperiment or observation |
| Vonversion Factor | a ratio delivered from the equality between two different units that can be used to convert from one unit to the other |
| density | the ration of mass to volume |
| derived unit | combination of si based units |
| quantity | something that has magnittude, size, or amount |
| si | and international measurment system |
| volume | amount of space occupied by and object |
| weight | measure of gravitational pull on an object |
| accuracy | the closeness of measurements to the correct or accepted value of the quantity measure |
| direct proportion | two quatinities that give a constant value when on e is divided by the other |
| inverse proportion | two quantities that have a constant mathematical product |
| percent error | a value calculated by subtracting the experimental value from the accepted value, dividing the difference by the accepted value, and then mutiplying by 100 |
| precision | the degree of refinement with which an operation is performed or a measurement stated |
| scientific notation | numbers written in the form M*10n where the factor M is a number greater than or equal to 1 but less than 10 and n is a whole number |
| significant figure | any digit in a measurement that is known with vertainty plus one final digit, which is somewhat uncertain or is estimated |
