Answer:
1. Continental-continental convergence are both <em>continental crust</em> plates.
2. Buoyancy basically means these plates are light float on top of the Asthenosphere.
Explanation:
1. To go a little more into detail, this type of convergence ocurrs when two plates made of continental crust (not oceanic) collide. In the case of ocean-continent convergence, the denser oceanic crust sinks underneath the lighter continental crust.
In this scenario, we have two plates, neither of which want to sink, so instead of going down they just crumple and fold and keep colliding. This collision creates very high mountain ranges such as the Himalaya and usually doesn't contain any volcanic activity because no magma is capable of penetrating through so much crustal material.
2. As for why continental crust is buoyant and doesn't sink has much to do with its composition. Continental crust is made mostly of silicate material. This is very different from oceanic crust which is made of basaltic rocks and is therefore heavier. The term buoyancy refers to the 'floating action' of the continental crust on top of the uppermost mantle.
In seafloor spreading, new oceanic crust is added at the mid-ocean ridge, and, as intrusion continues, seafloor moves toward the edge of the oceanic plate, where it is ultimately pulled back down into the magma below. ... It has deep trenches and high ridges.
Plate tectonics is a theory that the Earth's outer crusts are divided into seven plates that glide over the mantle. They are often blamed for earthquakes.
The ozone layer and our thick atmosphere keep the earth insulated!! any heat we get from the sun stays on the earth, warming everything up, since the ozone layer acts almost like insulation (or a greenhouse). i hope this helps!!
One of the most destructive hazards associated with composite volcano eruptions are super-heated gases called pyroclastic flows.
<h3>What are pyroclastic flows?</h3>
The pyroclastic flows are harmful mixtures of warmed rocks and gases released during volcanic eruptions.
These pyroclastic flows are very harmful because they reach very high velocities (up 710 km per hour).
In conclusion, one of the most destructive hazards associated with composite volcano eruptions are super-heated gases called pyroclastic flows.
Learn more about pyroclastic flows here:
brainly.com/question/15870685
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