What is pressure in terms of force and area?
Pressure is force acting per unit area perpendicular to the surface.
What formula expresses pressure using force and area?
Pressure is given by where F is force and A is area.
Why do a pointed nail and knife edge exert greater pressure?
Their smaller contact areas concentrate the applied force.
What causes liquid pressure to increase in a liquid column?
Increasing the height of the liquid column increases the pressure.
Pressure formula
P = F / A. Force per unit area.
Unit of pressure
Newton per square metre (Pa).
Liquid pressure increases with
Height of liquid column.
Atmospheric pressure effects
Keeps objects like rubber suckers attached.
High-speed wind impact
Can cause roof damage.
Lightning hazard
Electrical discharge during storms.
Cyclone structure
Centered around low-pressure zones.
Answer 11 questions on Pressure Winds Storms and Cyclones.
1. Which expression defines pressure when a force acts perpendicular to a surface?
2. A force of 100 N acts perpendicular to an area of 2 m². What pressure does it produce?
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