Chapter 4: Shaping landscapes

Chapter 4:

Shaping landscapes

  • Section 4.1.: types of exogenous forces & types of rocks
  • Section 4.2.: Weathering
  • Section 4.3.: Glaciers
  • Section 4.4.: Erosion by water (rivers and sea's)
  • Section 4.5.: sedimentation
  • Section 4.6.: Erosion by wind
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Slide 1: Tekstslide
AardrijkskundeMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 40 slides, met tekstslides en 13 videos.

Onderdelen in deze les

Chapter 4:

Shaping landscapes

  • Section 4.1.: types of exogenous forces & types of rocks
  • Section 4.2.: Weathering
  • Section 4.3.: Glaciers
  • Section 4.4.: Erosion by water (rivers and sea's)
  • Section 4.5.: sedimentation
  • Section 4.6.: Erosion by wind

Slide 1 - Tekstslide

Section 4.1.:

Learning goals:
- Describe which forces helped to shape places like Yellowstone National Park;
- Explain the difference between weathering and erosion;
- Explain the differences between rocks.
Endogenous forces are forces that shape our planet from the inside (e.g. volcanoes, earthquakes).

Exogenous force or process that changes our earth from the outside. 

Slide 2 - Tekstslide

Three exogenous forces:

Slide 3 - Tekstslide

Slide 4 - Link

Three types of rocks
  • Igneous rocks: volcanic rocks consits of solidified magma or lava (igneous means burning);
  • Sedimentary rocks: from loose sediment that because of pressure became rock;
  • Metamorphic rock: used to be a igneous or sedimentary rock but changed (=metamorphed) because of pressure into a metamorphic rock

Slide 5 - Tekstslide

Igneous rock

Slide 6 - Tekstslide

Sedimentary rocks

Slide 7 - Tekstslide

Metamorphic Rocks

Slide 8 - Tekstslide

Rock cycle
Because of heat and pressure the type of rock can change.

Slide 9 - Tekstslide

Section 4.2.:

Learning goals:
You will be able to:
  • Describe the three different types of weathering;
  • Explain which factors affect the weathering process;
  • Explain the effects of weathering on human activities.
When rocks are formed they will be break down in smaller fragments.
This breaking down under influence of temperature, precipitation and/or vegetation is called weathering.

Slide 10 - Tekstslide

Slide 11 - Video

Three types of weathering:
  1. Physical weathering
  2. Chemical weathering
  3. Biological weathering.

Read the information on pages 84 and 85 of your textbook
Link the next statements with the type of weathering:
  • You need a lot of water;
  • Happens in warm climates;
  • Happens in cold climates;
  • The rocks only crumbles;
  • Not found in deserts;
  • Substance of the rock changes

Slide 12 - Tekstslide

Slide 13 - Tekstslide

Peltier diagram

Slide 14 - Tekstslide

Slide 15 - Video

Section 4.3. Glaciers

Learning goals:
  • Desbribe and name the different components of glaciers and their landscapes;
  • Explain how glaciers formed landscapes
  • VWO: explain how glaciers formed parts of the Netherlands

Make a wordlist with all the different components of a glacier.

Slide 16 - Tekstslide

Slide 17 - Video

Slide 18 - Video

Slide 19 - Tekstslide

When the ice is gone the U-shaped valley with its hanging valleys becomes visible

Slide 20 - Tekstslide

Ice in the Netherlands

Slide 21 - Tekstslide

Section 4.4. Water and waves

Learning goals:
1. Explain how the Grand Canyon was formed. 
2. Compare and contrast erosion from rivers and the sea 
3. Explain solutions to stop coastal erosion.

Watch the movie and explain  in max 10 sentences in your own words how the Grand Canyon was formed.

Slide 22 - Tekstslide

Slide 23 - Video

Slide 24 - Tekstslide

What do we need?
- Rocks with a different strength.

The overlaying harder rock doesn't erode as fast as the underlying softer rock.

Slide 25 - Tekstslide

Slide 26 - Video

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Slide 28 - Video

Slide 29 - Video

Section 4.5. Sediment deposition
1. Explain how rivers form deltas; 
2. Describe how the Mississippi delta landscape was affected by Hurricane Katrina;
3. Explain the Saffir-Simpson scale;
4. Explain what wetlands are and how they are formed;
5. Describe how the Dutch delta is protected from floodings.

If rivers flow through an area with less relief they will deposit the sediments and form a delta. Especially "flat" countries as the Netherlands are known for its deltas. 

What are the advantages and disadvantages of living in a delta?

Slide 30 - Tekstslide

When the relief becomes less the river will deposit its sediments in the form a delta. The heavier the fragments the earlier the sediment will deposit, the leighter the later.

Order these sediments from heavy to leight:
Sand, pebble, clay, gravel

Slide 31 - Tekstslide

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Slide 33 - Tekstslide

Hurricanes (Saffir-Simpson scale)

Slide 34 - Tekstslide

Slide 35 - Video

Especially low land areas located near the tropics have a risk of getting to deal with hurricanes. 
- What could happen to these areas?
- Why do hurricanes only form near the tropics?
- What is the difference between a hurricane, cyclone and typhoon?
- How do we measure the force of hurricanes?

Slide 36 - Tekstslide

Slide 37 - Video

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Slide 39 - Tekstslide

Slide 40 - Video