Plan the investigation
What students will do
Compare the three probes, explain the results, and check one pressure calculation.
- Compare three vessels. Use the shared probe-depth control and read gauge pressure from each probe.
- Check a density change. Calculate the pressure for a denser liquid and compare with the probe reading.
What students will learn
- Compare pressure at a matched depth.
- Distinguish liquid volume from pressure at a point.
- Use liquid density and depth to predict gauge pressure.
Common misconception
Does more liquid mean greater pressure at the same depth?
Students compare different liquid volumes while keeping depth and density the same.