Fluid - any substance that can flow and take the shape of the container that holds it, Pressure - the amount of force per unit area applied to an object’s surface, Atmospheric pressure- - the ratio of the weight of all the air above you to your surface area, Density - the measure of how much mass is packed into a certain amount of volume., Buoyant force - an upward force applied by a fluid on an object in the fluid, Archimedes’ principle - states that the weight of the fluid that an object displaces is equal to the buoyant force acting on the object, Pascal’s principle - states that when pressure is applied to a fluid in a closed container, the pressure increases by the same amount everywhere in the container, Bernoulli’s principle - states that the pressure of a fluid decreases when the speed of that fluid increases, Drag force - a force that opposes the motion of an object through a fluid,

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