Les 4 - intro §1.2 Rock changes

Welcome everybody
Take your own seat
1 / 16
next
Slide 1: Slide
AardrijkskundeMiddelbare schoolvwoLeerjaar 3

This lesson contains 16 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 45 min

Items in this lesson

Welcome everybody
Take your own seat

Slide 1 - Slide

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

Slide 2 - Slide

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

Slide 3 - Slide

Slide 4 - Slide

Slide 5 - Slide

how did this rock break?

Slide 6 - Mind map

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

Slide 7 - Slide

Slide 8 - Slide

Slide 9 - Slide

what do you think has happened here?

Slide 10 - Mind map

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 - Slide

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 - Slide

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

Slide 14 - Quiz

Slide 15 - Slide

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

Slide 16 - Slide