A Wonderleaf question
What is the longest river in the world?
a real page from the book
Most books still name the Nile as the world's longest river. Some researchers argue the Amazon may be longer if you begin measuring from a very distant mountain stream in Peru. So the plain answer is: usually the Nile, with the Amazon as a serious challenger.
The puzzle comes from deciding where a river begins. Big rivers gather water from many smaller streams, and choosing one source over another changes the tape measure. The Amazon also carries far more water than any other river, whether or not it wins on length.
Wonder words
- source
- tributary
- current
- basin
Try it out
Draw a winding river on paper, add tiny side streams, and decide together where the river should start.
Read the whole picture book
Watercolour scenes, straight answers, about three minutes cover to cover.
Open the picture bookKeep wondering
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