§5.4 and more

§5.4 and more

The next questions are about how the river shapes the landscape (p.86-87)

Important words: 

• Erosion
• Transportation
  
• Deposition
• Load
  
• Sediment

The river picks up materials, and scrapes away the land.

The river brings rocks, sand and clay to another place.

The river leaves rocks, sand and clay behind.

The rocks, sand and clay that are transported by the river.

The rocks, sand and clay that are deposited by the river.

Which processes happened at letters A and B?

Erosion

Transportation

Deposition

A

B

Where to find it in your book?

On page 84 you can find the three most important processes in the river: erosion, transportation and deposition.

At letter A you see that sand it taken away: erosion.

At letter B you see that material is left behind: deposition.

Look at the image and complete the sentence:

The river ............ the river bank away.

1. eroded
2. transported
3. deposited

Where to find it in your book?

On page 84 you can find the three most important processes in the river: erosion, transportation and deposition.

In the image you can see that sand is taken away: this is erosion.

Look at the image and complete the sentence:

The river ............ sand.

1. erodes
2. transports
3. deposits

Where to find it in your book?

On page 84 you can find the three most important processes in the river: erosion, transportation and deposition.

In the image you can see that there is sand in the river. The river brings it to another place: transportation.

What do you see in these two images? Combine with the correct word.

Sediments

Load

Where to find it in your book?

On page 84 you can find the three most important processes in the river: erosion, transportation and deposition.

The load is the material that is transported by the river. You see that in the left image.

The sediments is the material that is left behind (deposited). You can see that in the right image.

Look at the image. Rocks like this you'll find in the ............... of the river.

1. lower course
2. middle course
3. upper course

Where to find it in your book?

On page 84 you can find the three most important processes in the river: erosion, transportation and deposition.

This is the upper course. The rocks are too heavy to be transported to the middle course. The river slows down and deposits the heavy rocks first.

Look at the image.

These rocks are left behind here. They are ..............

1. eroded
2. transported
3. deposited

Where to find it in your book?

On page 84 you can find the three most important processes in the river: erosion, transportation and deposition.

The rocks are deposited, left behind.

Look at the image. It shows how a V-shaped valley is formed. Complete the sentence:

The river ........... the V-shaped valley.

1. eroded
2. transported
3. deposited

Where to find it in your book?

On page 84 you can find the three most important processes in the river: erosion, transportation and deposition.

The river takes away the sand and rocks, so the valley becomes deeper and deeper. Taking away materials = erosion.

Read the text. Put the words in the correct places. 

1

1

1

1

1

1

1

deposited

erosion

transported

middle course

upper course

sediments

load

Answer explanation

If the river flows quickly (in the upper course) there is a lot of erosion = rocks are picked up.

If the river slows down, the heaviest materials are left behind = deposition. This happens in the middle course.

The load = the materials that are transported by the river.

Sediments = the materials that are deposited by the river.

Finish the sentence:

If the river flows fast (1) happens.
If the river flows slowly (2) happens.

1. 1 = transportation 2 = deposition
2. 1 = deposition 2 = erosion
3. 1 = erosion 2 = transportation
4. 1 = erosion 2 = deposition

Where to find it in your book?

On page 84 you can find the three most important processes in the river: erosion, transportation and deposition.

If the river flows fast, there is mostly erosion.

If the river flows more slowly, the river deposits materials.

1

2

Look at the image. Make the correct combinations.

1

2

river flows fast

river flows slowly

erosion

deposition

Where to find it in your book?

On page 87 you can see how a meandering river forms. You can also watch the video again (see Magister studywijzer).

In the outer bend the river flows more quickly: erosion happens.

In the inner bend the river flows more slowly: deposition happens.

Look at the image. Where will an oxbow lake probably form soon?

1. 1
2. 2
3. 3
4. 4

Where to find it in your book?

On page 87 you can see how a meandering river and oxbow lake form. You can also watch the video again (see Magister studywijzer).

At number 1 the river can flow straight if there is high water. The river takes the short cut, and it leaves behind a large oxbow lake.

The next questions are about erosion and are only for havo/vwo.

Important words: 

• Abrasion
• Hydraulic action
• Attrition

These are all forms of erosion!

Rocks in the river, scrape over the river bed.

The water takes sand from the river banks.

Rocks in the river knock each other into smaller pieces.

Make the correct combinations

Abrasion

Hydraulic action

Attrition

Where to find it in your book?

On page 86 you can find more information about the different types of erosion.

Look at the image. The river bank is eroded away.

Which type of erosion happened here?

1. Attrition
2. Abrasion
3. Hydraulic action

Where to find it in your book?

On page 86 you can find more information about the different types of erosion.

Rocks in the river made this valley deeper and deeper. It became a V-shaped valley.

Which type of erosion happened here?

1. Attrition
2. Abrasion
3. Hydraulic action

Where to find it in your book?

On page 86 you can find more information about the different types of erosion.