| A | B |
| The group that receives the placebo | control group |
| The metric unit for length | meter |
| The amount of space something takes up in 3 dimensions | volume |
| The amount of "stuff" (matter) something contains | mass |
| The metric base unit for time | second |
| The part in an experiment that does not change | constant |
| An organized way of solving a problem | scientific method |
| A testable statement of possible truth sometimes called an "educated guess" | hypothesis |
| The metric unit for mass | grams |
| the metric unit for volume | Liter |
| the part of the experiment that is actually being tested--what is changed or "varied" in the procedure | independent variable |
| the part of the experiment that is a result that depends on the independent variable | dependent variable |
| The amount of space something takes up in 2 dimensions | area |
| Another name for "mind over matter"; the control group receives this | placebo |
| the metric units for density | kg/L |
| When water (or any liquid) rises due to something placed in it | displacement |
| Defined as mass divided by volume | density |
| metric prefix for 1000 | Kilo |
| metric prefix for 10 | deca |
| metric prefix for one thousandTH | milli |