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3.1 The earth's layers and plates
Natural Disasters
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3.1 The earth's layers and plates
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Aardrijkskunde
Middelbare school
vwo
Leerjaar 1
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16 slides
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interactive quizzes
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text slides
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3 videos
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Lesson duration is:
45 min
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Natural Disasters
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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
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