1.2.8—Negative feedback loops
- Syllabus
- First assessment 2026
- Objective
- 1.2.8
- Level
- SL
Negative Feedback Pushes Back
Negative feedback reduces an initial deviation by making an output counteract the change, helping a system return toward its earlier range.
Write the full loop: change → response → response opposes the original change. ‘Negative’ describes direction, not harm.
Warming favours reflective white daisies; greater reflection cools the surface, opposing the initial warming.
Negative feedback, because the response reduces the initial temperature change.
Negative means change-reducing, not harmful.