The concept of pressure in liquids are used in many daily activities.
1. The water tanks in our houses are placed high above the ground so that there is a high pressure to ensure the water flows to the taps.
2. In hydroelectric power stations, a dam is built to hold water and when there is a big amount of water, the water level is increased. The turbine installed at the bottom part of the dam will be turned by the water flowing at a high pressure. When the turbine is turned, electricity is generated.
3. A patient who is put on a drip is also another example for pressure in liquids. The drip bottle will be hung on a pole to place it higher than the end of the tube attached to the intravenous needle on the patient's hand. As a result, the pressure of the solution in the drip bottle is higher than the blood pressure. Thus, the solution is able to flow into the patient's body.
Although pressure in liquids may bring negative effects, we can reduce its effect using certain ways.
1. A dam retaining water must be able to withstand the force exerted by the water. Since the water pressure increases with depth, the base of the dam must be broader to withstand the bigger force.
2. Submersibles are used to transport people in the deep sea as these submersibles can withstand the massive pressure due to the depth and density of the sea water. Some robots used for underwater tasks like pipeline repairs, seabed mapping, exploration and researches also need to be able to withstand the great pressure.
3. An ordinary scuba diving equipment is not enough for divers who go deep into the sea. These divers will need to wear an all-encasing suit and they will need to move around using a propeller attached to the suit.
