Pressure in liquid acts equally in all directions and is not affected by the shape, size, or surface area of the container. Pressure depends only on depth, with deeper depths experiencing higher pressure. Applications where pressure differences in liquids are used include water supply systems, which place reservoirs at higher elevations to provide water pressure to lower areas, and medicine infusion, where bottles are elevated to provide pressure to flow medicine into veins.

1. Pressure in LiquidPressure in Liquid
Pressure in liquid is not affected
by area

2. Pressure inPressure in
liquid actsliquid acts
equally inequally in
all directionall direction
Characteristics of Pressure inCharacteristics of Pressure in
LiquidLiquid

3. Pressure in liquid is not affected byPressure in liquid is not affected by
shape, size and surface areashape, size and surface area

4. Pressure inPressure in
Liquid of 2Liquid of 2
pointspoints
which arewhich are
at the sameat the same
depth is thedepth is the
same.same.

5. Pressure in LiquidPressure in Liquid
affected by depthaffected by depth
from the surface offrom the surface of
the liquidthe liquid
 The deeper it goes, theThe deeper it goes, the
higher the pressurehigher the pressure

6. Bubbles get bigger
as they rise to the
surface of the sea.
Why?

7. Pressure in thePressure in the
liquid = pressureliquid = pressure
of liquid +of liquid +
atmosphericatmospheric
pressurepressure

8. Applications ofApplications of
Pressure in LiquidPressure in Liquid

9. Public water supply systemPublic water supply system
 Reservoir is placed at elevated location so thatReservoir is placed at elevated location so that
water have sufficient pressure to flow towater have sufficient pressure to flow to
consumers at lower groundsconsumers at lower grounds

10.  Broad and thicker base to withstand highBroad and thicker base to withstand high
water pressure at the bottom of the damwater pressure at the bottom of the dam
Construction of damsConstruction of dams

12. Infusion ofInfusion of
medicine tomedicine to
patientpatient
 The medicineThe medicine
bottle is hung at anbottle is hung at an
elevated positionelevated position
so that medicineso that medicine
has sufficienthas sufficient
pressure to flowpressure to flow
into the veins ofinto the veins of
patientpatient