Water Pressure in a Bottle

Flashcards covering key vocabulary and concepts related to water pressure, its calculation, units, and impact of depth, based on the kscience.com lecture.

Pressure due to a liquid

Calculated as: height (depth) "h"
times the liquid's density
times the gravitational field strength "g" (P = h
density
g).

Pascal (Pa)

The standard unit for pressure.

Meter (m)

The standard unit for height (h) or depth in pressure calculations.

Kilogram per meter cubed (kg/m³)

The standard unit for a liquid's density.

Newton per kilogram (N/kg)

The standard unit for gravitational field strength (g).

Effect of depth on water pressure

Pressure increases with depth; water from deeper holes spurts out with higher force, higher pressure, and travels further.

Density of water

1000 kilograms per meter cubed (kg/m³).

Gravitational field strength on Earth (g)

9.8 newtons per kilogram (N/kg).

Pressure calculation at 0.05 m depth

0.05 m
1000 kg/m³
9.8 N/kg = 490 Pascals.

Pressure calculation at 0.2 m depth

0.2 m
1000 kg/m³
9.8 N/kg = 1960 Pascals.

Pressure calculation at 0.4 m depth

0.4 m
1000 kg/m³
9.8 N/kg = 3920 Pascals.