earthquakes and volcanoes
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13 Terms
What is Plate Tectonics?
The theory that Earth's plates move and cause earthquakes and volcanoes.
What are the four layers of Earth?
Crust
Mantle
Outer Core
Inner Core
What happens at a Destructive Boundary?
Plates collide.
What happens at a Constructive Boundary?
Plates move apart.
What happens at a Conservative Boundary?
Plates slide past each other.
What is the Focus?
The point underground where an earthquake starts.
What is the Epicentre?
The point on the Earth's surface above the focus.
What is a Shield Volcano?
Wide, gentle slopes, less explosive.
What is a Composite Volcano?
Steep sides, explosive eruptions.
Why do earthquakes often cause more deaths in LICs?
Weaker buildings and poorer emergency response.
Name three preparedness methods.
Drills
Strong buildings
Early warning systems
One advantage of living near a volcano?
Fertile soil.
One disadvantage of living near a volcano?
Dangerous eruptions.