By: Eilyn candela

Topic: Earth science

 

   How are the plate tectonics change the world that we living?

Plate tectonics are form by crust of the land. Are two types of crust oceanic vs. continental. The difference is that one is under the ocean and the other one is made by rock underneath. Convection currents are the force that helps move plates ways of each others. During this process realized 3 types of boundary.

Divergent boundary.

 A tectonic boundary where two plates are moving away from each other and new crust is forming from magma that rises to the Earth's surface between the two plates. creating mid ocean and rift valley.

           Convergent boundary

      A  tectonic boundary where two plates are move and push up against each other make a hole call trench. creating a mountain or a volcano.

Transform boundary  A tectonic boundary where two plates are move slide against each other creating Earth quakes. 

How the Volcanoes are Form

When are convergent plate pushing the continental crust makes a mountain or a volcanoes are formed by magma is a hot fluid or a liquid rock inside of volcano. When the magma and crust meets together makes lava. What are different stages of volcanoes Active: Is a volcano which has recently erupted. Dormant eructed: is volcano which has not erupted in long time Extinct: are volcanoes which have not eructed of thousands years ago. Different types of volcanoes Cinder cones: circular or oval cones made up f small fragment of lava. Composite volcanoes: composed of many layers of volcanoes rock, hot spot or busy lava. Shield volcanoes: shape of the volcanoes made by basaltic lava flows. Lava volcanoes: lava is formed by steam. What the different is between lave and magma Lava is liquid rock that flows out of the volcano. Magma is liquid rock inside a volcano.