Rohan says a plateau is really just a small mountain

Why

Rohan is grouping plateaus and mountains together because both are raised land, standing higher than the ground around them. But their SHAPE is what makes them different landforms, and the difference is not just size. A mountain rises to a narrow peak or ridge — steep sides going up to a point. A plateau is raised land with a broad FLAT top, which is why it is also called a 'tableland'. Test it: think about what people do on each — plateaus are mined for minerals and, where there is soil, farmed, because you can stand equipment and grow crops on a flat surface; you cannot do either on the steep point of a mountain, no matter how small the mountain is. His sister is right: a mountain goes up to a peak, a plateau has a flat top — they are different shapes, not just big and small versions of the same thing.