| Term | Definition |
|---|---|
| Model | A representation of a complex object or process, used to help people understand a concept that they cannot observe directly. |
| System | A group of related parts that work together to perform a function or produce a result. |
| Input | Material, energy, or information that goes into a system. |
| Process | A sequence of actions in a system. |
| Output | Material, energy, or information that comes out of a system. |
| Feedback | Output that changes a system or allows the system to adjust itself. |
