1. A collection of parts that perform a function
System
A collection of parts that perform a function

2. Input: items needed to start the system
What are some inputs into a car?

3. Explain the process in a car
Process: the ordered action of the system
Explain the process in a car

4. What is the output on a car?
Output: the finished product or waste from the process
What is the output on a car?

6. Feedback: when the output alters earlier inputs in the system

7. Feedback

10. Open-loop systems
- set up to get a result, but there's no feedback to check the results
these create waste
For example, bathroom heater
The aim of the system would be to heat a bathroom. When turned on, the heating would stay on until it was turned off, regardless of whether the bathroom remained cold or became too hot.

11. Closed-loop systems
Are able to correct in order to meet target results.
Have a Feedback and are self-contained
For example: modern heating/AC systems
a thermostat could be added to measure the temperature of a room and compare it to a set target. If the room became too cold, the thermostat would turn the heating on and if the temperature became too hot the system would be turned off.

12. Is this open or closed loop? Why?

13. Is this open or closed loop? Why?

14. Is cruise control an open or closed loop system? Why?

15. Is a basic light switch open or closed loop system? why?

16. Is a light that shuts off if no one is in the room, open or closed loop? Why?

17. Estuary – if river meets the ocean

18. Chesapeake Watershed

19. Estuary – where freshwater meets the ocean

20. Cycles - a series of repeating events

21. Symmetric - one side is a mirror image or reflection of the other.

22. Symmetric?

23. Symmetric?

24. Geometric pattern

25. Geometric pattern
What geometric shape repeats itself inside the roof Trusses?

26. Periodic Pattern

27. Patterns in nature