Words of This Lesson
| Word | Meaning |
| Liquid | A substance that flows and takes the shape of the vessel holding it |
| Pressure (P) | The force acting at right angles on unit area |
| Density (d) | The mass present in unit volume, for water 1000 kg/m³ |
| Weight (W) | The pull of the earth on a mass, \( W = m \times g \) |
| Volume (V) | The space an object takes up, here \( V = A \times h \) |
| Acceleration due to gravity (g) | The acceleration given by the earth's gravity, 9.8 m/s² |
| Depth (h) | The height measured downward from the surface of the liquid |
| Pascal (Pa) | The unit of pressure, 1 Pa = 1 N/m² |
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