Science: Elementary School: Grades 3, 4 and 5 Quiz - Rivers (Questions)

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Rivers are natural streams of water. They are formed by the movement of water from high ground to lower ground and then usually to the sea. The place where a river begins is called its source. Rivers are constantly changing as they flow over lands and have many different features. They can change shape as they erode the ground at their banks. When rivers eventually meet the sea they may form 'D' shaped masses of channels called deltas.. Small rivers are also called streams, creeks and brooks.

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1. In which part of the river does water flow the fastest?
[ ] Upper course
[ ] Middle course
[ ] Lower course
[ ] Estuary
2. What name is given to the bottom of the river?
[ ] Delta
[ ] Bank
[ ] Bed
[ ] Channel
3. What are the sides of the river called?
[ ] Delta
[ ] Banks
[ ] Bed
[ ] Channel
4. Where is the source of a river?
[ ] Near the sea
[ ] Mud flats
[ ] Lakes
[ ] High ground
5. What are smaller rivers flowing into another river called?
[ ] Tribulations
[ ] Estuaries
[ ] Deltas
[ ] Tributaries
6. When a river carries rocks and soils it is known as what?
[ ] Deposition
[ ] Erosion
[ ] Transportation
[ ] Flooding
7. What is erosion?
[ ] River deposits rocks and soils as it flows
[ ] River carries rocks and soils as it flows
[ ] River removes rocks and soils as it flows
[ ] River dries up
8. What is deposition?
[ ] River deposits rocks and soils as it flows
[ ] River carries rocks and soils as it flows
[ ] River removes rocks and soils as it flows
[ ] River dries up
9. The wide part of the river near the sea is called what?
[ ] Tributary
[ ] Valley
[ ] Channel
[ ] Estuary
10. Where a river deposits sediment faster than the sea can remove it what feature forms?
[ ] Valley
[ ] Delta
[ ] Mountain
[ ] Channel
Science: Elementary School: Grades 3, 4 and 5 Quiz - Rivers (Answers)
1. In which part of the river does water flow the fastest?
[x] Upper course
[ ] Middle course
[ ] Lower course
[ ] Estuary
The upper course is on steeper ground so it flows fater
2. What name is given to the bottom of the river?
[ ] Delta
[ ] Bank
[x] Bed
[ ] Channel
The river bed is made up of rocks, mud, sand or pebbles
3. What are the sides of the river called?
[ ] Delta
[x] Banks
[ ] Bed
[ ] Channel
River banks can be eroded by the water in the river over time
4. Where is the source of a river?
[ ] Near the sea
[ ] Mud flats
[ ] Lakes
[x] High ground
Rivers often have their sources in mountains or hills
5. What are smaller rivers flowing into another river called?
[ ] Tribulations
[ ] Estuaries
[ ] Deltas
[x] Tributaries
A tributary is a stream or river that flows into another river rather than into the sea
6. When a river carries rocks and soils it is known as what?
[ ] Deposition
[ ] Erosion
[x] Transportation
[ ] Flooding
Transportation is part of the process that changes the shape of the river over time
7. What is erosion?
[ ] River deposits rocks and soils as it flows
[ ] River carries rocks and soils as it flows
[x] River removes rocks and soils as it flows
[ ] River dries up
Erosion can occur both on the banks and bed of the river
8. What is deposition?
[x] River deposits rocks and soils as it flows
[ ] River carries rocks and soils as it flows
[ ] River removes rocks and soils as it flows
[ ] River dries up
When a river slows down near its end the materials it has been carrying are often deposited
9. The wide part of the river near the sea is called what?
[ ] Tributary
[ ] Valley
[ ] Channel
[x] Estuary
The Humber and the Thames are both famous estuaries in Britain. The picture is a view of the Humber Estuary taken from the International Space Station
10. Where a river deposits sediment faster than the sea can remove it what feature forms?
[ ] Valley
[x] Delta
[ ] Mountain
[ ] Channel
Deltas are named after the Greek letter delta, which is the shape of a triangle