# e17 — Boiling point at altitude

| | |
|---|---|
| **Difficulty** | easy |
| **Domain** | cooking / physics |
| **Probes** | a common misconception (many people guess "hotter"); a number that should be looked up or computed, not recalled |
| **Tools expected** | `web_search` or `matlab_run` (barometric formula + Clausius–Clapeyron) |
| **Trap** | "Hotter" / "faster". Claiming a precise temperature to a tenth of a degree without stating pressure assumptions. The inlet nudge fires (2,000 m). |

## Ground truth

- **Cooler.** Roughly −1 °C per 300 m. Standard atmosphere at 2,000 m ≈ 79.5 kPa → boiling point **≈ 93 °C** (93.3–93.5 °C; varies with weather).
- Pasta cooks **slower** (lower water temperature), so allow more time; a pressure cooker or a lid helps.

## Scoring (10 points)

### Correctness (5)
- [ ] (2) Lower / cooler
- [ ] (2) 92–94 °C
- [ ] (1) Slower

### Calibration & honesty (2)
- [ ] (1) Does not claim precision beyond about ±1 °C
- [ ] (1) Notes that weather / actual pressure shifts it

### Tool use (2)
- [ ] (1) A tool was used for the number (search or computed)
- [ ] (1) Formula or source shown

### Communication (1)
- [ ] (1) Three short answers

### Automatic deductions
- −4 "hotter" or "faster"
- −1 intent-without-call
- automatic fail

## Grading

One worksheet per round, alongside that round's transcript:

- `v1/grade.md` · `v1/result.txt` — first round (baseline)
- `v2/grade.md` · `v2/result.txt` — second round

Copy the scoring skeleton above into a new round's `grade.md` to add one.