This question is about gas behaviour and hydrostatic pressure.
Complete each sentence to explain how increasing the volume of a gas at a constant temperature affects its pressure.
You can use each word once, more than once, or not at all:
areaenergyforcefrequencyspeed \textbf{area} \quad \textbf{energy} \quad \textbf{force} \quad \textbf{frequency} \quad \textbf{speed} areaenergyforcefrequencyspeedWhen the volume of a gas is increased at a constant temperature, the gas particles have the same average _____________.
The particles now travel further between the walls of the container, resulting in a lower _____________ of collisions with the walls.
This produces a smaller average _____________ per unit area over the container walls, which results in a lower pressure.
A technician investigates how the pressure and volume of a sealed sample of air are related when kept at a stable room temperature. Their experimental measurements are recorded in the table below:
| Pressure (kPa\text{kPa}kPa) | Volume (cm3\text{cm}^3cm3) |
|---|---|
| 120 | 150 |
| 180 | 100 |
| 240 | 75 |
| 300 | 60 |
The technician proposes the hypothesis:
pressure×volume=constant\text{pressure} \times \text{volume} = \text{constant}pressure×volume=constant
Use the data in the table to determine whether the technician's hypothesis is supported.
A robotic submersible is designed to explore the Mariana Trench. Explain why the water pressure acting on the exterior of the submersible increases significantly as it descends to greater depths.