Natural disasters in Japan - Japan: country in the ring of fire
12 important questions on Natural disasters in Japan - Japan: country in the ring of fire
How much do these plates move per year?
There ar 4 types of plate movements. Can you name them?
Can you name two kind of plates? Which one is the heaviest?
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What happens when a continental plate and a oceanic plate collide?
Can you tell me how a volcano is created at the ocean floor?
the oceanic crust begins to melt. Molten rock (= magma) is formed.
Magma rises to the Earth's surface and breaks though it.
this creates a volcano
Japan is located on the border of 3 plates. Can you name them and tell me what kind of plates they are?
The Pacific plate (= oceanic plate)
The Philippine plate (= oceanic plate)
What is the movement of the 3 plates in Japan?
What does it create?
It creates deep trenches in the ocean
How do earthquakes develop?
The tension in the Earth's crust gradually increases.
Eventually the pressure is released in an explosion of energy
This causes earthquakes
The earth's crust is changed by two kind of forces. Can you name them?
From the inside (= endogenic force)
The earth's crust consists of several plates. What are the cracks of faults between those plates called?
What happens at the divergent boundaries?
Here magma rises.
On the seabed the magma cools down and creates a mountain range on the seabed. This is called a .....(ridge?)
What happens at convergent boundaries?
One plat dives below the other plate.
this causes deep trenches (a deep gorge, a deep canyon) into the see
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