Pressure

• A fluid is any material in a state of matter which flows; it is a liquid or a gas.
• The more water above an object, then the greater the force applied and the greater the pressure exerted.
• When an object is submerged partially, it will have a greater pressure on the bottom surface than on the top surface (there is more

  water behind the force acting upwards). This creates an upwards resultant force called upthrust and this is what causes an object to float.