The relationship between the ideas in this sentence is chronological. The sentence describes the sequence of events, stating that the children spent an hour in the reptile house before moving on to the aviary.
The relationship between the ideas in this sentence is a temporal or sequential relationship. The first part of the sentence indicates a specific time frame ("before moving on"), while the second part of the sentence describes a specific activity ("spent an hour in the reptile house"). The time frame of spending an hour in the reptile house occurs before the time frame of moving on to the aviary.
The relationship in this sentence is a temporal relationship, specifically a sequence of events. It states that before the children moved on to the aviary, they spent an hour in the reptile house. This indicates that the children visited the reptile house first and then, after spending an hour there, moved on to the aviary.
