1. Which of the following is not helpful in presenting mass movements? a. planti
ID: 294209 • Letter: 1
Question
1. Which of the following is not helpful in presenting mass movements?
a. planting vegetation on newly graded slopes
b. adding subsurface drainage to reduce water content on a slope
c. regarding an oversteepened slope
d. raising the water level behind a dam to hold down a potential failure surface
e. redistributing the mass on a slope by terracing
2. True or False? Landslide-potential maps designate areas in which construction is illegal because of the high risk of mass movement there.
3. True or False? A rock glacier is a glacier that is so thickly covered with surface rock it is pushed firmly to the ground and can no longer move.
4. True or False? Landslides happen when the angle of repose is somehow exceeded and the slope readjusts itself.
a. planting vegetation on newly graded slopes
b. adding subsurface drainage to reduce water content on a slope
c. regarding an oversteepened slope
d. raising the water level behind a dam to hold down a potential failure surface
e. redistributing the mass on a slope by terracing
2. True or False? Landslide-potential maps designate areas in which construction is illegal because of the high risk of mass movement there.
3. True or False? A rock glacier is a glacier that is so thickly covered with surface rock it is pushed firmly to the ground and can no longer move.
4. True or False? Landslides happen when the angle of repose is somehow exceeded and the slope readjusts itself.
Explanation / Answer
1) regarding an oversteepened slope
in the case of over steepened slope, it is difficult to prevent mass movement.
2) true
landslide potential map shows the area at risk, so all th construction activities should be avoid in such areas, because the land becomes unstable when an additional weight come over there
3) false
these kind of glaciers move very slowly and they makes sratches to the ground rocks over which they move, and some times cut through the hard rocks
4) false
landslide occurs due to many reasons and the angle of response is one among them.
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