Continental Drift
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Continental drift is a theory set forth in 1912 by a man named Alfred Wegener. The theory states that all continents on the earth were once connected in one "supercontinent" called Pangea. The theory states that this huge land mass split up into the continents we have today. This theory makes sense as the coastlines of some continents fit together like puzzle pieces (South America and Africa). Similar rock forms and mountains can be found in continents that are now on opposite sides of the world.(Appalachian mountains in north america and in northern Europe). Even today continents are slowly moving around creating underwater valleys between them. Because of this, Scientists predict all the continents to come together in 250 million years making another mass continent called Amasia. With continents moving and slowly coming together, there's no reason why the opposite couldn't have happened 200 million years ago.
This map illustrates what Pangea would have looked like 200 million years ago. It proves Wegener's theory by showing how the continents we have today fit so well together to become one. it paints a good picture in your mind and shows that Pangea definitely could have existed.
Glaciation
What is Glaciation?
Glaciation is The formation and movement of glaciers. Glaciers have the ability to ride the wave of their melt through mountains and hills to create the valleys we have today. They can also completely cover a large area of land. Today, only about 10 per cent of the earth is covered in these sheets of ice but back millions of years ago, when glaciation was much more extensive, glaciers covered most of the earths surface. It just goes to show the influence that these chunks of ice have on our ever-changing world.
How does Glaciation Affect landforms?
Glaciation can affect landforms in many different ways. Glaciation can cover a whole continent in a thick sheet of ice, completely changing the lives of those who live there. It can also create brand new landforms by plowing through mountains and leaving trails of water to create an interconnecting path of fjords. Glaciers can also move rocks and dust to new areas building a landform in a different location. The movement and settlement of glaciers can completely change the earth as we know it, creating new landforms or moving old ones to a different location. Glaciation is a key factor in changing our earth and shows that land forms do not always stay the same.
Glaciation is The formation and movement of glaciers. Glaciers have the ability to ride the wave of their melt through mountains and hills to create the valleys we have today. They can also completely cover a large area of land. Today, only about 10 per cent of the earth is covered in these sheets of ice but back millions of years ago, when glaciation was much more extensive, glaciers covered most of the earths surface. It just goes to show the influence that these chunks of ice have on our ever-changing world.
How does Glaciation Affect landforms?
Glaciation can affect landforms in many different ways. Glaciation can cover a whole continent in a thick sheet of ice, completely changing the lives of those who live there. It can also create brand new landforms by plowing through mountains and leaving trails of water to create an interconnecting path of fjords. Glaciers can also move rocks and dust to new areas building a landform in a different location. The movement and settlement of glaciers can completely change the earth as we know it, creating new landforms or moving old ones to a different location. Glaciation is a key factor in changing our earth and shows that land forms do not always stay the same.
Land Reclamation
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Which method is more environmentally friendly?
I think that deep cement mixing is more environmentally friendly. It involves changing the toughness of the ocean floor instead of lowering the water quality. Other methods of land reclamation can lower the surrounding waters quality by bringing contaminated water up from the infected ocean floor. These methods include drained reclamation. Drained reclamation involves applying pressure to the bed of the ocean and draining the water out to create a stable surface to build on. although it is cheap, the water brought up from the ocean floor by drained reclamation is often polluted and can affect the wildlife such as dolphins and coral reef. I think that deep cement mixing will not affect the animals in the area nearly as much as drained reclamation.
I think that deep cement mixing is more environmentally friendly. It involves changing the toughness of the ocean floor instead of lowering the water quality. Other methods of land reclamation can lower the surrounding waters quality by bringing contaminated water up from the infected ocean floor. These methods include drained reclamation. Drained reclamation involves applying pressure to the bed of the ocean and draining the water out to create a stable surface to build on. although it is cheap, the water brought up from the ocean floor by drained reclamation is often polluted and can affect the wildlife such as dolphins and coral reef. I think that deep cement mixing will not affect the animals in the area nearly as much as drained reclamation.