| A | B |
| science | the organized way of gathering and analyzing evidence about the natural world |
| observation | the act of noticing and describing events or processes in a careful, orderly way |
| inference | a logical interprestation based on what scientists already know. |
| hypothesis | a scientific explanation for a set of observations that can be tested |
| controlled experiment | a type of experiment in which only one variable is changed |
| independent variable | the variable that is deliberately changed in a controlled experiment. |
| dependent variable | the variable that changes as a response of the other variable in a controlled experiment. |
| control group | a group exposed to the same conditions as the other group except for the independent variable. |
| data | experimental observations which can be numerical, or quantitative, or non-numerical, such as a description. |