§2.2: Rivers of ice part 1

§2.2 Rivers of ice part 1

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Slide 1: Slide

AardrijkskundeMiddelbare schoolmavo, havo, vwoLeerjaar 2

This lesson contains 19 slides, with interactive quizzes, text slides and 3 videos.

Lesson duration is: 50 min

Items in this lesson

§2.2 Rivers of ice part 1

Slide 1 - Slide

Program

Homework check and books
Discuss assignment

Assignment lessonup
New notes
Homework

Slide 2 - Slide

Discuss assignment

Question 8

Slide 3 - Slide

Erosion by ice

Erosion by wind

Erosion by water

Slide 4 - Drag question

Chemical weathering

Mechanical weathering

Slide 5 - Drag question

Erosion

Weathering

Slide 6 - Drag question

Erosion and weathering

Slide 7 - Slide

Chapter 2 paragraph 2

1. What do you see?

2. Where did they take the photo?

Slide 8 - Slide

Slide 9 - Video

Slide 10 - Video

Glacier

Glaciers = rivers of ice moving slowly downhill

By thawing and freezing again and again the snow changes in time into firn: grainy, icy snow left over from previous seasons.

Firn piles up in low-lying places high in the mountains to form firn basins, the beginning of what will be a glacier.

Slide 11 - Slide

Ice-age/Glacial-age

Thousands of years ago, the Alps were completely filled with glaciers

Glacial: Cold period during which the earth's average temperature drops a few degrees and extensive ice sheets form on land. Also called ice age

Slide 12 - Slide

Slide 13 - Video

The remains of Glaciers

The glacier took with it not only ice, but also weathering material (see photo).

We can still see this material in the places where there used to be a glacier.
We call this moraines

Slide 14 - Slide

Moraines

Glacial debris surrounding a glacier.
    Lateral moraines
    Ground moraines
    Terminal moraines

Slide 15 - Slide

What do moraines have to do with the Netherlands?

There used to be ice in the Netherlands, too, and it left debris. You can still find the boulders in many places.

Slide 16 - Slide

During ice age, ice from Scandinavia pushed into the Netherlands.

What did the Netherlands look like during the ice age?

https://schooltv.nl/video/hoe-zag-nederland-eruit-in-de-ijstijd-bedekt-door-gletsjers-uit-scandinavie/

Slide 17 - Slide

Ice-ages

glacial = period when the average temperature dropped by 5 degrees

interglacial = period between glacials in the ice age?

Slide 18 - Slide

Let's go to work!

You may work on part 1 of the homework assignments:

§2.2: assignments 1 to 5

This is homework for next Monday!

Finished? Make assignments §2.2 6 to 10

Slide 19 - Slide