- bias: occurs when what the scientist expects changes how the results are viewed
- constant: a factor that does not change when other variables change
- control: the standard by which the test results can be compared
- dependent variable: amount of growth due to value changes dependent on changes in other variables
- experiment: tests the effect of one thing on another using controlled conditions
- hypothesis: a possible explanation for a problem using what you know and what you observe
- independent variable: variable that you change to see how it will affect the dependent variable
- model: represents an idea, event, or object to help people better understand
- scientific law: a statement about what happens in nature and that seems to be true all the time
- scientific method: an organized set of investigation procedures
- technology: the application of science to help people
- theory: an explanation of things or events based on knowledge gained from many observations and investigations - not a guess
- variable: a quantity that can have more than a single value