土石流 Motivation of the project Body of our research report Reflection Because the mudslide disaster caused the loss of our life and property, and even affect the national economic and social development. We want to find out not only the reason that causing landslide disasters but also the solution in order to prevent the mudslide happen. 1. What is Debris Flow? 2. The Reasons Causing Debris Flow. 3. The Reasons For Taiwan Debris Flow. 4. Debris Flow Disasters 5. How to Prevent it? The Debris flow is a phenomenon that flood carried mud and stone from higher place to lower place abruptly in mountain area. Usually, it happens after heavy rain. The rain penetrates the mud and reaches to impermeable layer. It likes lubricant that decrease the friction between the rock, and makes it more softly and traveling. Besides, it will increase the weight of layer and the possible of collapse. The reasons for debris flow can be divided into rain, ice or alpine snow rapid melting, landslides, volcanic eruptions, earthquakes, avalanches, failure of nature dams or failure of artificial dams, improper hillside development ... .... First, the intense orogeny caused mountain steeping and fast flowing rivers. Second, the geology of Taiwan is too young that collapsing easily. And then, Taiwan is located in the Humid Lands and the path of the typhoons often through so rainfall and its intensity are amazing. Also the frequent earthquakes, inappropriate lands development and utilization make debris flow occur frequently. It usually hollowed out the foundation and makes the building destroyed. Not only threaten the resident’s life and property but also affect the national economic and social development. Therefore, we must make sure that we are prepared for it then the damage could be avoided. To prevent the landslides is not easy, but there are some ways to reduce the hazards of landslides, such as avoid the mudslide danger zone, forest protection, do soil and water conservation, reduce the development of the mountains. Struggling against the Nature has to pay the price. So, how to develop the lands appropriately while achieving a balance between human and nature depends on all people to reflect and plan. REFLECTION OF 楊惠晴 In this activity, our team chemistry is getting better. Through division of labor, we can finish the report efficiently. Naturally, we learn many words and grammar, we write sentences more smooth. We not only learn the knowledge but also happy to complete the report. REFLECTION OF 李金坤 I think people in the future to take care of the earth, to reduce energy use, the Earth would not have disaster against humanity anymore! REFLECTION OF 何炬勳 In the process, I know the water and soil conservation is important for people. If we were not made good of it, we would be punished of nature. This English project is not only recognizing new vocabularies but also know how to read articles efficiently. Although my English is not well, I had done my best to complete this project. I believe I can maintain this idea in my future. REFLECTION OF 劉嘉航 This time, I have more experience to do this work. It’s not that hard. But the process still have some difficult. For example, some new words I did not know will cause my time to look up the dictionary. However the result can let me learn more than I thought. It was a very meaningful things to me. REFLECTION OF 許玉婷 In this final report, we have to not only write down an article but also translate it into English. These are the problems that let me get into trouble. Finally, we finish this report with the assistance of group members. And my English ability has a significant progress in this final report.