| A | B |
|---|
| meter | the basic unit of length |
| volume | the amount of space that something occupies |
| mass | the amount of matter that something is made of |
| temperature | a measure of how hot or cold something is |
| area | a measure of how much surface an object has |
| density | mass per unit volume |
| scientific method | a series of steps that scientists use to answer questions and solve problems |
| hypothesis | a possible explanation or answer to a question |
| variable | one factor in an experiment that is changed |
| observation | any use of the senses to gather information |
| theory | a unifying explanation for a broad range of hypotheses and observations that have been supported by testing |
| data | pieces of information acquired through testing |
| physical science | the study of matter and energy |
