# 2.4 Sedimentation

Program
Homework: WB page 42-43: 3,6,7

Sedimentation
- in the riverplain
- near the rivermouth

Homework
1 / 18
Slide 1: Tekstslide
AardrijkskundeMiddelbare schoolvwoLeerjaar 2

In deze les zitten 18 slides, met interactieve quizzen, tekstslides en 1 video.

## Onderdelen in deze les

Program
Homework: WB page 42-43: 3,6,7

Sedimentation
- in the riverplain
- near the rivermouth

Homework

#### Slide 1 -Tekstslide

Q3b: Under which circumstances will a glacier become larger?
A
Cold winters, warm summers
B
Mild winters, cool summers

#### Slide 3 -Tekstslide

From mountain to the sea
A river basin can be divided into three parts:
- upper course
- middle course
- lower course

#### Slide 4 -Tekstslide

In which part of the river basin does most of the mechanical weathering take place?
A
Upper reaches
B
Middle reaches
C
Lower reaches

#### Slide 5 -Quizvraag

In which part of the river basin does most of the erosion take place? Explain your choice.

#### Slide 6 -Open vraag

Shingle, sand and clay
Mechanical weathering and erosion of rock  result in shingle (=gravel), sand and clay.

Sand
Shingle
Rock
Clay

#### Slide 8 -Sleepvraag

Transport
Shingle, sand and clay are transported in the river basin to the lower reaches of the river.

#### Slide 9 -Tekstslide

What does the river transport in the upper reaches?
A
Shingle
B
Sand
C
Shingle and sand
D
Shingle, sand and clay

#### Slide 10 -Quizvraag

The middle reaches: sedimentation
The river is slowing down

==> sedimentation at the bottom of the river and in the inner bends

#### Slide 11 -Tekstslide

In the middle reaches sedimentation by the river starts. Which type of soil will be deposited first?
A
Shingle
B
Sand
C
Clay

#### Slide 12 -Quizvraag

The lower reaches: sedimentation
During high water levels in the river, the river plain floods.

==> the water comes to a standstil: sand and especially clay are deposited.

#### Slide 13 -Tekstslide

Sand and clay are deposited at various locations in the river plain. What do we find near the river itself?
A
Sand
B
Clay

#### Slide 14 -Quizvraag

The river mouth
In the river mouth, the water also comes to a standstill.

==> sand and clay is deposited and a delta is formed

#### Slide 15 -Tekstslide

The river mouth
How can you recognize a delta?

1. A piece of land that stretches out into sea.

2. The river splits into several branches.
3. It has the shape of a triangle.

#### Slide 16 -Tekstslide

Get started!
Textbook: read page 34-35: The river Po
Workbook page 44
Assignments:  1,2,4 and 5
(watch the Youtube-movie in Magister before starting assignment 5)

Thursday 21th of January: Formative Test 2.1-2.3