| A | B |
|---|
| physical science | the study of matter and energy |
| scientific method | a series of steps that scientists use to answer questions and solve problems |
| observation | using the five senses |
| hypothesis | educated guess; a good explanation for a problem |
| data | the results of an experiment usually in number or words |
| law | a summary of many experiments; accepted as true |
| theory | this can be changed by new evidence |
| model | representation of an object |
| meter | metric unit of length |
| liter | metric unit of volume |
| gram | metric unit of mass |
| density | mass per unit of volume |
