Chapter 7.1 review

Chapter 7.1  (review)
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Slide 1: Slide
AardrijkskundeMiddelbare schoolhavoLeerjaar 1

This lesson contains 21 slides, with interactive quizzes and text slides.

Items in this lesson

Chapter 7.1  (review)

Slide 1 - Slide

Earth’s crust is always changing
Natural forces

Exogenic                          Endogenic
change the Earth’s crust                         change the Earth's crust
from the outside                       from the inside

weatering / erosion                             vulcanos/earthquakes

Slide 2 - Slide

Layers of the earth
Crust: layer we live on, solid and very thin. Made of rocks.

 thickest layer of the earth, liquid but also moveable. 


Slide 3 - Slide

Layers of the earth
Outer core: liquid also made out of nickel and iron. Cooler around 3000 - 4500 degrees C.

Inner core
: solid made out of nickel and iron. Very warm (4000 and 6000 degrees C.)


Slide 4 - Slide

We have two types of tectonic plates:

Oceanic plates:
  • Found under oceans, 
  • thin (up to 10 kilometres)     but heavier. 
  • Made of basalt.

Continental plates:
  • Found under continents, 
  • thick (up to 75 kilometres)     but lighter. 
  • Made of granite.

Slide 5 - Slide

Three different plate movements
  1. Plates move away from each other = divergent movement
  2. Plates move toward each other = convergent movement
  3. Plates slide alongside each other = transform movement

Slide 6 - Slide

Slide 7 - Slide

* earthshakes
Earth plates slide past each other. That is not gradual, but difficult. Tension is built up. If there is too much tension, the plates will shoot to discharge the tension.
Heavy earthquakes are born.

Slide 8 - Slide

Two oceanic plates are moving away from eachother.
Because of the high pressure in the 
mantle, the magma rise up. 
When it comes into contact with 
seawater, the magma solidifies.
A mountain range is created on 
the sea floor.  --> mid-oceanic ridge

Slide 9 - Slide

  • When two continental plates collide with each other :
              continental plates (lighter) will push each other up.
               --> mountain range

Slide 10 - Slide

  • When an oceanic plate collide with a continental plate (subduction):
               the heavier oceanic plate will sink back in the mantle. 
               the lighter continental plate will rise up.
--> vulcanos
--> trench
--> mountains

Slide 11 - Slide


Slide 12 - Slide

Ring of fire

Slide 13 - Slide

Natural forces change the earth's crust.
Natural forces that change the earth's crust from outside are called ......
exogenic forces
endogenic forses

Slide 14 - Quiz

Inner core
Outer core

Slide 15 - Drag question

Very thin
Convection current

Slide 16 - Drag question

What causes the magma to flow around in the mantle?
The heat in the core of the earth
The heat of the sun's rays on the earth

Slide 17 - Quiz


Slide 18 - Drag question

What are the effects of plate movements?

Slide 19 - Slide

I =...........................




Slide 20 - Slide

Let's take a look at your homework.

Do you have a question about this?

Slide 21 - Slide