1) The start of a river is called its: a) mouth b) current c) spring d) source 2) The place where a river ends its journey and flows into a larger body of water is called a) a confluence b) a mouth c) a tributary d) wetlands 3) What is a small river or stream flowing into another river called? a) an estuary b) a confluence c) a tributary d) a delta 4) A meander is: a) a deep, rocky valley b) when two rivers merge c) a curve or bend in a river d) the bottom of a river 5) A __________ is the point where two rivers merge to form a single channel of water. a) tributary b) mouth c) lake d) confluence 6) The bottom of a river is called a bed. a) True b) False

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