Upper course - The source of a river. Water becomes fast flowing. River bed consists of rocks and pebbles., Middle course - Flatter and wider middle section. River bed consists of sand and mud. Bends appear called meanders., Lower course - Slower section of the river. Wide open channels. Has floodplains where water spills onto the land. River bed mostly mud. Mouth of the river as it meets the sea.,

Year 4 River course introduction

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