| A | B |
| hypothesis | an educated guess used to make testable predictions |
| independent variable | the part of the experiment that is changed by the scientist so it can be tested (only one) |
| dependent variable | the part of the experiment that is measured to gather results |
| control | the part of the experiment where the independent variable is not tested; used for comparison |
| constants | all the factors of an experiment that are kept the same |
| system | a group of objects or phenomena that interact or work together |
| interpret | process of recognizing patterns in data |
| experiment | an organized procedure to study something under controlled conditions |
| classification | grouping based on shared characteristics |
| communicate | process of describing, recording, and reporting experimental procedures and results to others |
| qualitative observations | descriptions of sights, sounds, smells, and textures |
| quantitative observations | descriptions using numbers and measurements |
| conclusion | the summary of results including whether the hypothesis was accepted or rejected |
| SI | a system of metric measurements that all scientists use - based on multiples of 10 |
| meter | base metric unit for length that is usually measured with some type of ruler |
| liter | base metric unit for volume that is usually measured with a graduated cylinder |
| gram | base metric unit for mass that is usually measured with a triple beam balance |
| mass | the measure of the amount of matter in an object |
| volume | the measure of the amount of space the object takes up |
| density | a measure of the amount of mass in a given volume of a substance |