Does Axel believe he is going to the centre of the Earth? How do you know? How does this belief affect his mood at the start of the journey?

When Lidenbrock decides to go to the center of the Earth, Axel tries to stop his uncle from embarking but eventually decides to take part in Lidenbrock's adventure. Throughout the narrative, Axel is pessimistic about the course of the trip, which he believes will end in his demise. He is somewhat naive, excitable, and anxious.