medium · Enhanced ACT science
A geologist hypothesizes that higher altitudes result in a lower boiling point for water due to decreased atmospheric pressure.
| Altitude (m) | Boiling Point (^circC) |
| :--- | :--- |
| 0 (Sea Level) | 100.0 |
| 1,000 | 96.7 |
| 2,000 | 93.4 |
| 3,000 | 90.1 |
Which statement evaluates the hypothesis based on these findings?
- The hypothesis is supported because the experiment safely reached a maximum recorded altitude of 3,000 meters up high.
- The hypothesis is refuted because water must always reach exactly 100^circC to boil, no matter the external altitude reached.
- The hypothesis is refuted because the atmospheric pressure at each altitude was never directly measured or recorded in this data table.
- The hypothesis is supported because the boiling point decreases by approximately 3.3^circC for every 1,000 m of altitude.
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