1. A mass movement in which a cohesive block of earth or rock slips downhill relatively quickly in one piece along a zone of weakness is called a . 2. Mass movements that move blocks of materials and unconsolidated materials down a curved surface creating scarps on a slope are known as . 3. When large rocks become dislodged and drop down a steep slope, the mass movement is called a . 4. are very gradual mass movements in which the whole slope moves downhill slowly. 5. When unconsolidated material moves downslope as a viscous fluid it is called a .