During a flood, a river drops the largest pieces of its sediment on the floodplain close to its normal channel. explain why?

When a stream floods, it deposits much of the sediment that it carries onto its floodplain as the largest pieces have a lot of weight and cannot be carried so are deposited.

Humid continental climate is found in the interior of continents between the 30 and 60 degrees latitude, but usually above the 40 degree line.   40 degrees north of the equator means less direct sunlight and therefore less warmth.   this climate is mainly found in the northern hemisphere since there are no major landmasses in the southern hemisphere.  if you live in northern indiana, you know all about humid continental because that is the climate type you have!