Children tend to be centered on themselves and heavily reliant on the immediate context and the data of their senses. Their thinking is perceptually dominated, drawn from direct experiences, rather than conceptually dominated. It is difficult for them to step outside themselves and to look at the world beyond them. The notion that the earth is flat and the sun moves around us are other common understandings among older children. The immediate context is all that they have, tightly linked to personal experience.
Young children are often more linear in their thinking about causality than adults are.
It's hard for them to juggle too many factors at the same time. They are not terribly upset, in the primary years, if theories contradict one another. They can have one theory over here and another one over there, and that's okay, for the moment. They haven't quite taken hold of the notion that you can't have contradictions. It doesn't necessarily mean that their thinking is illogical or irrational.