| A | B |
|---|
| natural law | a theory that has been tested many times without any contradictions |
| repeatable | describes evidence that can be seen independently by others if they repeat the same experiment or observation in the same way |
| theory | a scientific explanatin supported by a lot of evidence collected over a long period of time |
| hypothesis | a possible explanation that can be tested by comparison with scientific evidence |
| scientific method | process of learning that begins with a hypothesis and proceeds to prove or change the hypothesis by comparing it with scientific value |
| experiment | situation specifically set up to investigate relationships between variables |
| variable | a factor that affects how the experimen works |
| experimental (independepnt) variable | the variable you change in an experiment |
| control variable | a variable that is kept constant in an experiment |
| trial | each time an experiment is tried |
| procedure | a collection of all the techniques you use to do an experiment |
| technology | the application of science to meet human needs and solve problems |
| engineer | a professional who uses scientific knowledge to create or improve inventions that solve problems and meet needs |
