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.
The asthenosphere and the lithosphere are parts of the Earth's geosphere. The correct answer is A.
Answer:
f. gneiss is foliated, whereas quartzite is unfoliated
Explanation:
The rock quartzite is a non foliated type of metamorphic rock. This kinds of rock has its formation caused by quartz sandstone getting metamorphic.
Metamorphic rock which are foliates such a s gneiss are formed due to heating in the earth which causes them to be soft even though they remain in the solid state. This occurs during regional metamorphism
B. The continents on a map looked like they fit together.
A is the theory he proposed <em>after</em> making this observation
C and D would disprove his theory, not support it.
