Plate Margins Flashcards
Give two possible reasons why tectonic plates move.
Click to View the Answer
Click to View the Question
Convection currents & Slab pull (+ ridge push).
Give two possible reasons why tectonic plates move.
Describe the global distribution of volcanoes and earthquakes
Click to View the Answer
Click to View the Question
Earthquakes are found along all types of plate margins. Volcanoes, however, only occur at constructive and destructive plate margins. Volcanoes are also found away from plate margins at volcanic hot spots such as Hawaii in the Pacific Ocean.
Describe the global distribution of volcanoes and earthquakes
Identify the type of volcano that form on destructive plate margins
Click to View the Answer
Click to View the Question
Composite volcano
Identify the type of volcano that form on destructive plate margins
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.
What is the name of the upper portion of the mantle?
Click to View the Answer
Click to View the Question
The asthenosphere
What is the name of the upper portion of the mantle?
