| A | B |
| Observing | Using one or more of your five senses to gather information about the world. |
| Inferring | When you interpret an observation. |
| Predicting | Involves making an inference about a future event based on current evidence or past experience. |
| Classifying | Grouping together items that are alike in some way. |
| Making models | Helps people undestand things that they cannot observe directly. |
| Communicating | Process of sharing ideas and information with other people. |
| SI | Standard system of measurement used by scientists around the world. |
| Length | The distance between two points. |
| Meter | Unit of measure for length. |
| Volume | The amount of splace a liquid takes up. |
| Liter | Unit of measure for volume. |
| Mass | Amount of matter in an object. |
| Gram | Unit of measure for mass. |
| Celsius scale | Measure the temperature of a substance. |
| Thermometer | Object used to measure temperature. |
| Metric rulers | Measure length. |
| Graduated cylinder | Measures liquid volume. |
| Balance scale | Measures the mass of an object. |
| Problem | Scientific question that can be answered by gathering evidence. |
| Hypothesis | A possible explanation for set of observations or answer to a scientific question. |
| Variable | Any factor that can change in an experiment. |
| Manipulated variable | The factor that is changed in an experiment. |
| Responding variable | The factor that changes as a result of the manipulated variable. |
| Controlled experiment | An experiment in which all factors except one are kept constant. |
| Operational definition | Statement that describes how a particular object is to be measured or how a term is to be defined. |
| Data | Observations and measurements you make in an experiment. |
| Conclusion | Statement that sums up what you have learned in an experiment. |
| Data table | Records measurements and observations in an orderly way. |
| Bar graph | Used to display data in a number of separate, or distinct categories. |
| Line graph | Used to display data that shows how the responding variable changes in response to the manipulated variable. |