What is a river source?, River start, Lake bottom, River mouth, Sea edge, Which can be a river source?, Ocean tide, Desert dune, Spring, Volcano ash, Which source comes from melted ice in mountains?, Floodplain, Glacier, Tributary, Meander, Most of Earth's fresh water is found in what?, Rivers, Clouds, Springs, Glaciers, What do rivers carry that helps cause erosion?, Only leaves, Only fish, Sand and rocks, Salt water, What is erosion?, Freezing water, Wearing land away, Plant growth, Building new rock, What valley shape often forms by river erosion?, Star shape, Circle shape, Square shape, V-shape, Why does a waterfall form?, Soft rock erodes, Sand disappears, Wind blows hard, River stops moving, What is the hole below a waterfall called?, Floodplain, Oxbow lake, Plunge pool, River source, Near its start, a river is usually..., Still and dry, Small and fast, Wide and slow, Deep and salty, Near the sea, a river is usually..., Wide and slow, Narrow and icy, Steep and short, Small and fast, What are big S-shaped river curves called?, Glaciers, Tributaries, Sources, Meanders, Where do meanders usually form?, High cliffs, Dry desert, Deep sea, Flat land, What is an oxbow lake?, River source, Cut-off bend, Mountain glacier, Hard rock step, What is a tributary?, Curved lake, Waterfall hole, Small joining river, Flat river land, What do tributaries do?, Make river larger, Dry rivers up, Stop erosion, Freeze the sea, What is a floodplain?, Deep ocean floor, Flat river land where soil is fertile for crops, Underground spring, Steep mountain top, Why is floodplain soil good for growing vegetables?, Mud is left, It is salty, It has no water, It is frozen

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