The Southern Alps are constantly changing because the Pacific Plate is being pushed down under the Australian Plate and that causes the Alps to rise up. It breaks up into blocks or chunks. Sometimes these blocks of rock move up and down, as they move apart and blocks of rock end up being stacked on one another.
Dome mountains are the result of a great amount of melted rock magma pushing its way up under the earth crust. Without actually erupting onto the surface, the magma pushes up overlaying rock layers. At some point, the magma cools and forms hardened rock. The uplifted area created by rising magma is called a dome because of looking like the top half of a sphere ball. The rock layers over the hardened magma are warped upward to form the dome. But the rock layers of the surrounding area remain flat.
As the dome is higher than its surroundings, erosion by wind and rain occurs from the top. This results in a circular mountain range. Domes that have been worn away in places form many separate peaks called Dome Mountains.
As the name suggests, volcanic mountains are formed by volcanoes. Volcanic Mountains are formed when molten rock magma deep within the earth, erupts, and piles upon the surface. When the ash and lava cools, it builds a cone of rock. Rock and lava pile up, layer on top of layer. Plateau Mountains Erosion Mountains. Plateau mountains are not formed by internal activity.
Instead, these mountains are formed by erosion. The oceanic crust of the Earth is different from its continental crust. The oceanic crust is 5 km 3 miles to 10 km 6 miles thick and is made up of mostly basalt, diabase, and gabbro.
The continental crust is typically from 30 km 20 mi to 50 km 30 mi thick, and it is mostly composed of less dense rocks than is the oceanic crust. The mantle is made up of molten rock. Its like very hot jam sticky and not too runny but still partially runny. Because of convection currents heat creates circular movement in the underlying plastic, although non-molten, upper mantle and asthenosphere, the lithosphere is broken into tectonic plates that move AKA, the crust.
The upper part of the mantle is composed mostly of peridotite, a rock denser than rocks common in the overlying crust. The core has 2 parts inner core and outer core. The outer core is made of liquid iron, the inner core is also made of iron but solid iron.
Hope it helps, all the best. You can write about the different things you come across. Talk about the differences in the materials you travel through. For example, hard brittle crust, down to the pliable asthenosphere, etc until you reach the solid center.
You might mention what is going on around you like magma plumes, tectonic activity, swirling liquid iron etc. Just a few ideas Please check these links out for some ideas, http: Sorry, No Idea You can search google geography for all your querry.
Related Questions Yes homework or no homework?
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