SP9f Pressure in fluids Flashcards
What happens as altitude increases?
.number of air molecules decreases
.weight of air decreases
.less air above the surface
What is pressure from fluids inside your body equal to?
atmospheric pressure.
Why does pressure increase with depth?
because of the weight of fluid above.
What is a fluid?
liquid or gas.
What does pressure depend on? (2)
.depth in fluid
.density of fluid
Why is pressure much greater in water than in the air?
because water is much denser than air.
What can forces of particles on the walls of a container be resolved into?
horizontal and vertical components.
Which components contribute to the creation of pressure?
only components that are perpendicular to the sides of the container.
What does each small force exerted by particles add up to?
a large net force.
Why are particles in liquids considered virtually incompressible?
because they are so close together.
How is pressure transmitted in a liquid?
equally in all directions.
What happens to the force exerted at one point of a liquid?
force exerted at one point of a liquid will be transmitted to other points in the liquid.
