3.1 The earth's layers and plates

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3.1 The earth's layers and plates



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Slide 1: Slide
AardrijkskundeMiddelbare schoolvwoLeerjaar 1

This lesson contains 16 slides, with interactive quizzes, text slides and 3 videos.

time-iconLesson duration is: 45 min

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3.1 The earth's layers and plates



Slide 1 - Slide

Learning objectives
At the end of this lesson, you will be able to


  • Describe how the earth is built up of different layers
  • Explain what tectonic plates are and why they move 

Slide 2 - Slide

Slide 3 - Video

Layers of the earth
Mantle: thickest layer of the earth, solid but also moveable.

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

Slide 4 - Slide

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

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

Slide 5 - Slide

Plate tectonics
The earth consists of tectonic plates, these plates moves in a process we call plate tectonics or continental drift.
These movements cause earthquakes.
Some plates are small (e.g. Carribbean Plate) others are huge (e.g. Eurasian plate).

Slide 6 - Slide

Basalt
Granite

Slide 7 - 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 8 - Slide

Slide 9 - Slide

Plate tectonics is nothing new.
   

The earth's history is filled with plate movements, 300 million years ago all the plates formed one huge supercontinent called Pangea.

Slide 10 - Slide

Slide 11 - Slide

Slide 12 - Video

What type of crust is thicker?
A
Continental Crust
B
Oceanic crust

Slide 13 - Quiz

What is the layer called directly beneath the earths crust?
A
Mantle
B
Outer core
C
Inner Core
D
Atmosphere

Slide 14 - Quiz

The core of the earth isn't molten, but actually a solid ball
A
True
B
False

Slide 15 - Quiz

Slide 16 - Video