| A | B |
| experimental group | the group being tested in an experiment |
| observation | information you get using your five senses |
| control group | group used to compare experimental results in an experiment |
| hypothesis | untested idea, an educated guess |
| theory | idea with supporting evidence, explains why and can be used to explain results |
| direct observation | an observation made on something you can measure directly |
| indirect observation | observation based on a model or an effect; used when you cannot measure directly |
| law | explains something that occurs using supporting evidence, can be used to predict results |
| inference | a conclusion based on observations |
| scientific method | steps often used in solving problems |
| experiment | procedure used to test a hypothesis |
| procedure | steps done in an experiment |
| independent variable | varible "I" change; variable deliberately changed to see what happens |
| dependent variable | variable monitored or measured in the experiment |
| model | representation created to test a hypothesis because original cannot be tested |
| constant variable | variable stays the same during an experiment |
| qualitative observation | observation recorded which describes qualities (no numbers) |
| quantitative observation | observation recorded which is measured (contains number and unit) |