Fluids exert pressure on a container through the transfer of force. Fluids are made up of tiny particles that are in constant motion. When these particles collide with the walls of the container, they exert a force on the container. This force is what creates the pressure.

The pressure exerted by a fluid depends on several factors:

- Density: The density of a fluid is a measure of how much mass is packed into a given volume. The denser the fluid, the greater the pressure it will exert.

- Depth: The depth of the fluid also affects the pressure. The deeper the fluid, the greater the pressure it will exert. This is because there is more fluid pressing down on the bottom of the container at a greater depth.

- Shape of the container: The shape of the container can also affect the pressure. For example, a fluid exerts more pressure on the bottom of a container than it does on the sides. This is because the fluid at the bottom of the container is pushing down on the entire surface area of the bottom.

The pressure exerted by a fluid can have a significant impact on the container. In some cases, the pressure can be so great that it can cause the container to burst or collapse. This is why it is important to consider the pressure exerted by a fluid when designing a container.