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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.

Click on the pictures to make them larger.

In which part of the river does water flow the fastest?

[ ]	Upper course
[ ]	Middle course
[ ]	Lower course
[ ]	Estuary

What name is given to the bottom of the river?

[ ]	Delta
[ ]	Bank
[ ]	Bed
[ ]	Channel

What are the sides of the river called?

[ ]	Delta
[ ]	Banks
[ ]	Bed
[ ]	Channel

Where is the source of a river?

[ ]	Near the sea
[ ]	Mud flats
[ ]	Lakes
[ ]	High ground

What are smaller rivers flowing into another river called?

[ ]	Tribulations
[ ]	Estuaries
[ ]	Deltas
[ ]	Tributaries

When a river carries rocks and soils it is known as what?

[ ]	Deposition
[ ]	Erosion
[ ]	Transportation
[ ]	Flooding

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

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

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)

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

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

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

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

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

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

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

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

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