bahan UTS2

Tsunami
The term of “tsunami” comes from the Japanese which means harbour ("tsu") and wave ("nami"). A tsunami is a series of waves generated when water in a lake or a sea is rapidly displaced on a massive scale.
A tsunami can be generated when the sea floor abruptly deforms and vertically displaces the overlying water. Such large vertical movements of the earth's crust can occur at plate boundaries.
Subduction of earthquakes are particularly effective in generating tsunami, and occur where denser oceanic plates slip under continental plates.
As the displaced water mass moves under the influence of gravity to regain its equilibrium, it radiates across the ocean like ripples on a pond.
Tsunami always bring great damage. Most of the damage is caused by the huge mass of water behind the initial wave front, as the height of the sea keeps rising fast and floods powerfully into the coastal area.




Why is Bali Famous for Tourism Object?
One of the famous tourism spots in Indonesia is Bali island. Bali lays at the part east of Java. Thousand domestic and foreign tourists visit Bali each month. Do you know why Bali island is so famous?
A lot of tourists like fresh natural environment. If that what they want, Bali is the best choice to visit. Bali has beautiful landscape dominated with green luxurious terrace fields. Moreover Bali give fantastic view; beautiful sunrise in Sanur and fascinating sunset in Kuta beach.
Beside the beautiful beach and panorama, domestic and foreign tourists also enjoy the balinese local genius arts such as; dances, puras, and temples. Most of these objects are amazing.
Like many other tourism objects, Bali also provide souvenir center which they can take home. Most balinese people are artists. They spend their time to apply skill and imagination through painting, carving dancing.
What make them more exposed is that most of them are English speaking people. That is why Bali is well-known all over the world.



The Advantage and Disadvantage of Nuclear Power
Nuclear power is generated by using uranium which is a metal mined in various part of the world. The first large scale of nuclear power station was opened at Calder Hall in Cumbria, England in 1956.
Some military ships and submarines have nuclear power plant for engine. Nuclear power produces around 11% of the world's energy needed, and produces huge amounts of energy. It cause no pollution as we would get when burning fossil fuels. The advantages of nuclear plant are as follow:
• It costs about the same coal, so it is not expansive to make.
• It does not produce smoke or carbon dioxide, so it does not contribute to the greenhouse effect.
• It produces huge amounts of energy from small amount of uranium.
• It produces small amount of waste.
• It is reliable.
On the other hand, nuclear power is very, very dangerous. It must be sealed up and buried for many years to allow the radioactivity to die away. Furthermore, although it is reliable, a lot of money has to be spent on safety because if it does go wrong, a nuclear accident ca be a major accident.
People are increasingly concerned about this matter. In the 1990's nuclear power was the fastest growing source of power in many parts of the world.
The advantages and Disadvantages of Distance Learning
A few years ago, distance learning was seen as an inferior way but nowadays even famous and established traditional colleges and universities are providing distance learning courses and it is generally considered a way to improve one's life.
However, people still argue whether distance learning give more advantage or disadvantage. Some of them who see the benefit of distance learning will say that distance learning needs no commuting. Of course it saves money and time that students would take. Furthermore, distance learning can be done at any student’s convenience. Mostly of the classes of distance learning are asynchronous. It means that students do not have to attend a lecture at a fixed particular time and place. Students can review the assignments and do their homework during off-hours or from home. Additionally, distance learning gives more accessibility. No one can deny it. People with limited mobility may encounter the problem when they take traditional class. With the online class system, the problem is absent.
Despite the many advantages, the other people will see that distance learning is costly and needs complex technology. To attend online learning, student must have a computer with possibly access to the internet. Admitted or not, such technology devices are not always available for common students. Another disadvantage of distance learning is that it does not provide immediate feedback. Unlikely traditional classroom, students have to wait for the feedback and comment until the instructor has review the works and sent response to them. Most of the time students will study alone. Distance learners may feel isolated or miss that social physical interaction that comes with attending a traditional classroom
Regarding the individual’s learning style, some students are able to learn when there is a live interaction between them and the available of accompanying teacher while others don’t really need it. So before deciding a choice of attending distance learning or not, each student needs to do a fair analysis regarding the kind of person he/she is.