Pressure, Winds, Storms, and Cyclones

Height of the liquid column, Density of the liquid, Gravitational acceleration

Liquid pressure depends on height, density, and gravitational acceleration. The shape or color of the container/liquid doesn't affect pressure at a given depth.

Air pressure decreases

High-speed winds are accompanied by reduced air pressure. This principle explains why roofs can be blown off during storms.

Stay away from tall objects, Crouch down in open areas, Stay inside cars or buses

During lightning, avoid tall objects and metal items, crouch (don't lie flat) in open areas, and stay inside vehicles which provide protection.

Lightning rapidly heating and expanding air

Thunder is caused when lightning rapidly heats the air, causing it to expand quickly and produce the loud sound we hear.