Mass WastageExercise 2: Mass WastageMass waste is a phenomenon that has caused more than a million deaths and billions of dollars in damage throughout its history. Mass loss is classified according to the speed at which the debris moves down the slope. For example, rockfalls move at speeds greater than 30 km/h, while mudflows move at around 20 km/h. This field trip explored two translational slides; one on the Gros Ventre River in Wyoming and the other on the Madison River in Montana. In Wyoming, sliding was caused by saturation of clay and silt by rain and meltwater, and occurred on a sliding plane nearly parallel to the slope. . 40 million cubic yards of debris were moved and deposited nearly 300 feet on the opposite slope. The debris caused a natural dam that created a lake, but the dam eventually collapsed, causing a nearby town to be nearly destroyed. In Montana, the slide was triggered by an earthquake. As in Wyoming, the debris caused a natural dam, but the Army Corps of Engineers breached the dam to prevent a rupture. The rock that was moved was mostly schist and gneiss, which is unstable. The critical thinking section asked you to place an elaboration. The northeast quadrant was best because it had enough precipitation, not too steep a slope, and dense foliage. All of these factors help prevent landslides.Exercise 9: Land UseThis excursion takes us to the southern city of San Francisco. This city has a diverse economy that includes tourism and technology. Additionally, the city's residential areas are separated from commercial areas. There are also a good number of recreational and educational facilities in the city. When it comes to ethnic diversity, there are many types of ethnic groups spread throughout the city; there really aren't any ethnic boundaries like there are in larger, older cities. There is great diversity in the physiography of the region. The eastern part of the city is made up of backfilled land subject to liquefaction. The western part of the city is quite hilly and presents a risk of landslides..