Plate Margins Flashcards
What factors affect hazard risk?
Click to View the Answer
Click to View the Question
Factors include:
- An increase in the number of people vulnerable to the natural hazard (e.g. population growth & increased population density close to hazard-prone areas)
- An increase in the frequency and magnitude of the natural hazard
- A decrease in the number of people capable of coping with the natural hazard
What factors affect hazard risk?
Identify the two types of tectonic crust.
Click to View the Answer
Click to View the Question
Oceanic and continental crust
Identify the two types of tectonic crust.
What are the characteristics of the outer core?
Click to View the Answer
Click to View the Question
The layer surrounding the inner core. A liquid layer of iron and nickel.
What are the characteristics of the outer core?
Where in the world are the majority of the Earth’s volcanoes and earthquakes found?
Click to View the Answer
Click to View the Question
The majority of the Earth’s volcanoes and earthquakes occur around the Pacific Ring of Fire.
Where in the world are the majority of the Earth’s volcanoes and earthquakes found?
Describe the physical processes that happen at a destructive plate margin.
Click to View the Answer
Click to View the Question
When oceanic and continental plates collide the denser oceanic plate subducts the continental plate and enters the mantle where it melts. Magma can rise through the lithosphere and erupt as lava through volcanoes. As the oceanic plate subducts, it gets stuck due to friction. Pressure builds up until it is released as an earthquake.
Describe the physical processes that happen at a destructive plate margin.
