TECTONIC PLATES

TECTONIC PLATES

by Agustina Teacher

​​Convergent (Colliding) - Oceanic VS Continental

This occurs when plates move towards each other and collide. When a continental plate meets an oceanic plate, the thinner, denser, and more flexible oceanic plate sinks beneath the thicker, more rigid continental plate. This is called subduction. Subduction causes deep ocean trenches to form, such as the one along the west coast of South America. The rocks pulled down under the continent begin to melt.

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Sometimes the molten rock rises to the surface, through the continent, forming a line of volcanoes. About 80% of earthquakes occur where plates are pushed together, called convergent boundaries.

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​CONTINENTAL VS CONTINENTAL

​Another form of convergent boundary is a collision where two continental plates meet head-on. Since neither plate is stronger than the other, they crumple and are pushed up. This can lead to the formation of huge, high mountain ranges such as the Himalayas.

​DIVERGENT - two plates move away from each other

​ Molten rock from the mantle erupts along the opening, forming new crust. The earthquakes that occur along these zones, called spreading centers, are relatively small. The Great Rift Valley in Africa, the Red Sea and the Gulf of Aden all formed as a result of divergent plate motion.

Multiple Choice

Which one from the list below is not include in the plates' movement

• DIVERGENT

• CONVERGENT

• TRANSFORM

• BOUNDARY

Multiple Choice

Plate boundaries are the edges where two plates meet.

• TRUE 

• FALSE

Multiple Choice

When the 2 plates move toward each other its called ...

• CONVERGENT BOUNDARY

• DIVERGENT BOUNDARY

• TRANSFORM BOUNDARY

• NONE OF THEM IS CORRECT

Multiple Choice

When the plates move away from each other its called

• CONVERGENT BOUNDARY

• DIVERGENT BOUNDARY

• TRANSFORM BOUNDARY

Multiple Choice

When the plates scrape past each other its called ...

• CONVERGENT BOUNDARY

• DIVERGENT BOUNDARY

• TRANSFORM BOUNDARY

Fill in the Blank

The layer of the earth below the crust is called ______ ( use lower case letter) 

Multiple Choice

 COVERGENT BOUNDARIES CAN CAUSE THESE NATURAL PHENOMENA, EXCEPT......

• TORNADO 

• VOLCANO

• EARTHQUAKE

Multiple Choice

What happen when CONTINENTAL plate meet the other CONTINENTAL plate?

• It will caused volcano eruption

• They will crumple and pushed up, lead to the formation of huge, high mountain ranges such as the Himalayas.

• They will cracked and caused Tsunami 

• It will cause a destructive earthquake