1.4 Rock becomes sediment

1.4 Rock becomes sediment

Part 1

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Slide 1: Slide

AardrijkskundeMiddelbare schoolvmbo t, mavo, havo, vwoLeerjaar 2

This lesson contains 30 slides, with text slides.

Lesson duration is: 45 min

Items in this lesson

1.4 Rock becomes sediment

Part 1

Slide 1 - Slide

Learning goals

- You can recognise the upper, midle and lower courses of rivers from photos.

- You understand how sedimentary rock is formed.

- You can explain how sandbanks, dunes and deltas are formed

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Upper course

Middle course

Lower course

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The Upper course

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Upper course

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Upper course

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Upper course

Upper course:
- weathering material (sediments) ends up in glaciers and rivers.

= sediments that have been loosened by weathering.

(rock that is formed by the deposit of material by water, wind or ice.)

- height difference large

- stream speed high

- deep valleys scoured

- a lot of erosion

Slide 7 - Slide

The Middle course

Slide 8 - Slide

Middle course

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Middle course

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Middle course

Middle course:

- height differences smaller

- river flows less quickly

- power of water decreases

- less erosion

- sedimentation of medium-sized pieces

Slide 11 - Slide

The Lower course

Slide 12 - Slide

Lower course

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Lower course

Slide 14 - Slide

Lower course

Lower course:

- little to no relief

- flat area

- river flows slowly

- sedimentation of small particles

Slide 15 - Slide

Make exercise
2 and 3

Slide 16 - Slide

1.4 Rock becomes sediment

Part 2

Slide 17 - Slide

Learning goals

- You can recognise the upper, middle and lower courses of rivers from photos.

- You understand how sedimentary rock is formed.

- You can explain how sandbanks, dunes and deltas are formed

Slide 18 - Slide

What are the characteristics of upper, middle and lower course.

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The origins of a grain of sand

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The heaviest material sinks first and the lightest material is deposited furthest from the river.

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Slide 23 - Slide

Delta

How do you recognize a delta?

-A piece of land that extends into the sea.

-The river branches into several channels.

-It has a shape of a triangle.

Slide 24 - Slide

Rivers flow into the sea in different ways:

Delta: coast that is being formed when more material is deposited at the mouth of a river than is discharged into the sea by the current.

Estuary: wide river estuary, often in the shape of a funnel (trechter), which has been scoured by ebb and flow currents

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The formation of dunes

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Sandbank: a deposit of sand forming a shallow area in the sea or a river. Beaches form on these.

Dunes: a mound of sand formed by the wind, usually along the beach.

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Some of the sand that ends up in the sea ultimately forms the dunes.

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Slide 29 - Slide

Go to page 40-43

Make ex: 1, 4 and 5

Slide 30 - Slide

1.4 Rock becomes sediment

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