Lithosphere: Soils, Disasters, Structures and ProcessesThis is a featured page


LITHOSPHERE
Structures, Processes, Soils, Disasters

- Cyclone Disaster
- Volcano Explanation
- Formation of Oil and Gas
- Layers of the Earth
- Formation of Soil
- Earthquakes Explanation


Title: U.N. says 220,000 reported missing in Myanmar cyclone
Medium: News
Source: http://www.thedailygreen.com/cm/thedailygreen/images/8y/myanmar-cyclone-lg
Layers of the earth: Cyclones Cyclones can be very deadly caused my high wind speeds and low pressure. In order to prove that it can be very deadly the cyclone in Myanmar has had approximately 220,000 missing. As you can imagine it is know yet how much are killed. Cyclones can not directly kill or cause death directly. They damage the infrastructure and food supplies and possibly homes. The damage of infrastructure leads to low food supplies because it is difficult to get to the needy with all the conditions that would be face on the way. Although it has been said that death toll is now gone high to 33,416. Especially when there is a lack of behavior in the country causing violence causing death also Myanmar is now not at all safe place to be due to the lack of security. With suck a small population Myanmar are going visa to workers to help build the country and get it back on its feet after all the damage that its been through and what it may face in the future.



Title: Volcanoes
Medium: News Video
Source: http://news.bbc.co.uk/2/hi/science/nature/4972366.stm
This video pretty much explains itself. The explanation is thorough, crosses over with earthquakes and has a full educated reasoning behind the facts. We've selected this video because the review on volcanoes is explained in clear, precise detail for understanding. Volcanoes have a huge impact on the environment because they change the land formation, create disasters and create new rock. The usefulness of this media piece in the lithosphere is that volcanoes are a main source of disaster and are also a main part of the Earth's crust. Through conveying the educating image on volcanoes this video represents everything a volcano is.


Title: Formation of Oil and Gas
This video shows the formation of oils and gas in clear steps. The man explaining it, probably a geologist, tells us when, where and how natural substances are formed.
It is a very well thought out explanation because it is descriptive, clear and precise.
Oil and gas is formed by different layers of sand, soil and dead plants and animals. Then natural gas begins to form near the surface because of active bacteria. Sediment is buried further, the temperature rises and the and the organic materials start to boil/ cook (matures). The pressure of the oil and gas rise slowly and float between the gaps of the sediments (impermeable rock).This is how oil and gas are formed.
It takes over thousands of years before all this is produced. One issue is that the oil is taken out of the earth quicker than it is produced, so there is a possibility that the oil might run out after a 50 years.



Title: Layers of the earth
This video is about three school children who felt the earth shaking when they were in their tree house. They went to their teacher and asked what it was. The teacher thoroughly explains about the earth and its layers, and how it can lead to an earthquake using everyday objects. It is a very educational episode, because the topic is explained clearly, so it is understandable.
The teacher compares the earth to a peach (as a scale model) and then says that the pit is the core of the earth. The inner core is solid, and the outer core is liquid and very dense.The the inside of the peach you eat, he compares it with the mantle. It is not as dense as the core, but more dense than the crust.
I think this is a very good comparison, which makes the earths structure understandable.
With this knowledge of the earths layers, school children can discover how and why earthquakes happen, and what those affects could be.



Title: Formation of Soil
Medium: Cartoon Video
This video portrays the weathering of rock (and minerals), and the stages it takes for soil to form. The formation of soil takes place over a long period of time; it can take over a thousand years. The surface rocks break down into smaller pieces, through a process of weathering, and is then mixed with moss lichen and organic matter. Over time the rock is so small that there is a thin layer of soil covering the rock. Plants grow in the soil, attract animals, the animals die and their bodies decompose in the soil. This then creates a larger layer of soil letting larger plants grow, and the process to start again. Weathering is the process of the breaking down rocks. There are two different types of weathering; physical weathering and chemical weathering. Physical weathering breaks down the rocks, but what it's made of stays the same. Chemical weathering still breaks down the rocks, but it may change what it's made of. For example, a hard material may change to a soft material after chemical weathering.

Stages in the Formation of Soil
http://library.thinkquest.org/J003195F/soil.htm

The usefulness of this video in portraying the formation of soil, is that it explains it in detail but also quite vaguely at the same time. The explanations are simple and understandable, but define the topic in such a way that I can be education.



Title: Earthquakes
Medium: Cartoon Movie (2.22 mins - 4.12 mins)
Source: http://video.google.com/videosearch?hl=en&emb=0&q=valley+of+the+dinosaurs#q=the%20land%20before%20time%20earthquake&hl=en&emb=0

This video portrays an earthquake in progress.
This video shows us the effects of an earthquake and how dangerous it can really be. Through this media video, although it expressed through cartoon images, an earthquake at its full value and strength. I think that this is an important way to get the message of dangers across, as it appeals to nearly all ages.

Anylazing Earthquakes
An earthquake is the result of movement from the earth’s plate tectonics. The usual causes are a rupture of geological faults, huge amounts of gas migration (mainly methane deep within the earth) but also by volcanic activity, landslides, mine blasts, and nuclear experiments. Sudden release of energy from the Earth’s crust creates seismic waves and the magnitude of the earthquake depends on the size of the seismic wave. The higher the magnitude, the more dangerous the earthquake; 3 or lower is almost unfelt and 7 or over can cause serious damage. After the initial shake from an earthquake there is and aftershock, that can be almost the same magnitude as the earthquake. Earthquakes can trigger tsunami’s, landslides and sometimes even volcanic activity.
Conclusion.
The video is from a part of a movie " the land before time". It i not a very realistic movie, because in real life, the mountains/ valleys (which lie on the tectonicplates) would not actually move like that. It is probably a transforming earthquake, because of the valley in between the mountains.
Even thoughit is not realistic, it gives children an idea of what is and can happen in an earthquake, and that it does get the message across to all ages.
An earthquake causes damage to the land,infrastructureand natural habitats of animals. In this movie, you can't really see what happens to people and the infrastructure, but you can see the damage it does to the land's structure.



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drloewen Please indicate which question you are answering 3 Sep 16 2008, 12:18 AM EDT by cgueyraud2
Thread started: Sep 15 2008, 5:12 AM EDT  Watch
1. Provide 1 criticism or addition to the explanation given of the environmental process/system.

2. How could the negative (long and short term) impacts on human development be reduced in the future?

3. Evaluate the success of this media in conveying the environmental issues to its intended audience.
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drloewen what needs work 0 Sep 7 2008, 4:56 AM EDT by drloewen
Thread started: Sep 7 2008, 4:56 AM EDT  Watch
I am hoping there is a lot more you have to add here... Don't really understand why Ahmed has included a story on cyclones since it is not even in your list of 6 sources.
Make sure you follow the outline for media commentaries
you can embed all your videos to this site by clicking on the widget and follow instructions...
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