Conquer the IGCSE Geography Paper 4 CIE Challenge 2026 – Navigate Your Way to Success!

Infiltrometer use is about measuring how fast water soaks into soil. The key is to seal a ring or collar to the soil surface to prevent water from bypassing around the edges, fill the ring with water, and time how long it takes for the water to infiltrate to a chosen level. By watching how the water depth changes over a fixed period, you can calculate the rate of infiltration (how many centimetres of water enter the soil per hour, for example). This simple sequence—seal, fill, and time—is the standard approach for obtaining an infiltration rate with a basic infiltrometer.