| A | B |
| cause and effect | the relationship between an event and its result |
| control variables | variables that are kept the same throughout the experiment |
| controlled experiment | when one variable is changed and all the others are controlled or stay the same throughtout the experiment |
| distance | the length of space between two points |
| English system | a system of measuring that uses the units of inch, foot, yard, etc.... |
| experiment | any situation that is set up to observe and measure something happening |
| experimental technique | the exact procedure is followed each time an experiment is repeated |
| experimental variable | a variable in an experiment that is changed by the experimenter. This is plotted as an independent variable on the x-axis of a graph |
| hypothesis | a prediction that can be tested by experimentation |
| investigation | one or more experiences that are all connected to answering the same basic question |
| length | a unit of measurement for distance |
| measurement | the act or process of measuring in multiples of a specific unit |
| Metric system | a system for measuring that is based on the number 10 |
| procedure | a collection of all the techniques you use to do any experiment |
| research question | a question that is solved through investigation |
| scientific evidence | any observation that can be repeated with the same results |
| scientific method | a process that is used to gather evidence |
| second | a commonly used unit of time |
| time | a measurement of changes in motion or events |
| variables | factors that affect the results of an experiment |
| velocity | describes movement from one place to another over time and in a certain direction |