Geography is the study of spatial patterns and processes. That means, it looks at what the world is like and tries to explain why it is like this.
Geography is a subject which makes use of skills taught in other subjects like Maths, Science, and even History.
Geographers seek to understand the physical environment and the processes that have formed it. They look at how humans impact the physical world, and how these human and physical factors effect each other.
They use maps, photographs, plans, computer simulations and fieldwork to find out what the world is like. They ask questions and have a never-ending curiosity about why things are the way they are- whether that's how a lake got there, or what made mountains appear; or why people live in cities and how politics or economics has resulted in some parts of the world suffering famine.