Les 4 - intro §1.2 Rock changes

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Slide 1: Diapositive
AardrijkskundeMiddelbare schoolvwoLeerjaar 3

Cette leçon contient 16 diapositives, avec quiz interactifs et diapositives de texte.

time-iconLa durée de la leçon est: 45 min

Éléments de cette leçon

Welcome everybody
Take your own seat

Slide 1 - Diapositive

Planning
  • Homework check
  • Start §1.2 rock changes
  • making box 2a and 2b

Slide 2 - Diapositive

Homework check
I will call the people I select to me if the instructions are over
I choose three of you

Slide 3 - Diapositive

Slide 4 - Diapositive

Slide 5 - Diapositive

how did this rock break?

Slide 6 - Carte mentale

mechanical weathering
  • By freezing and thawing of ice
  • By vegetation, mainly their roots

Slide 7 - Diapositive

Slide 8 - Diapositive

Slide 9 - Diapositive

what do you think has happened here?

Slide 10 - Carte mentale

Chemical weathering
  • Some rocks react to water and oxygen
  • Iron rusts
  • Limestone (Kalksteen) dissolves in water
  • This breaks down the rocks over time

Slide 11 - Diapositive

Statement: In warmer climates more mechanical weathering takes place and in cooler climates more chemical weathering takes place
A
True
B
Not true

Slide 12 - Quiz

Not true
  • Warmth and humidity accelerate the processes which cause chemical weathering
  • The highest rates of mechanical weathering take place in areas which have temperatures below freezing during the night

Slide 13 - Diapositive

Statement: If it is extremely cold almost no weathering takes place
A
True
B
Not true

Slide 14 - Quiz

Slide 15 - Diapositive

Make the box about weathering
§1.2
Now it is time to check homework

Slide 16 - Diapositive