Plate Tectonics.  How many lithospheric plates are there on the earth?

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Presentation transcript:

Plate Tectonics

 How many lithospheric plates are there on the earth?

 There are 10 plates

 What kind of rock are the oceanic plates made of?

 Basalt

 What two kinds of rock are the continental plates made of?

 Granite and Andesite

 Which type of plate is more dense?

 The Oceanic Plates

 What kind of plate boundary is found between two plates that are separating?

 Divergent Plate Boundary

 What kind of plate boundary is found where two plates collide?

 Convergent plate boundary

 What kind of plate boundary is found where two plates slide past each other?

 Transform Fault Boundary

 When an oceanic plate meets a continental plate, which one will subduct and why?

 The oceanic plate will subduct below the continental plate because it has more density then the continental plate.

 What kind of geological formation happens at a divergent plate boundary?

 Mid-ocean ridge

 What kind of geological formation happens at a convergent plate boundary?

 A Trench

 When two continents collide, what type of geological formation will result?

 A mountain range

 What mountain range was formed when Indo-Australian plate collided with the Eurasian plate about 20 million years ago?

 The Himalayas

 Where is the newest crust on the earth found?

 At the mid-ocean ridges

 What kind of event happens when two plates slide past each other at a transform fault boundary?

 Earthquake

 What is the transform fault boundary that is located between the Pacific Plate and the North American Plate in California?

 The San Andreas Fault

How does studying fossils help us to support the theory of continental drift?

Since fossils of the same animals exist on different continents, it tells us that the continents were once connected.