MASS WASTING

Question 1

Part of the regolith that supports the growth of plants

Answer 1

Soil

Question 2

Is the layer of rock and mineral fragments that covers most of Earth’s land surface

Answer 2

Regolith

Question 3

5 Major Components of Soil

Answer 3

Mineral Matter
Broken-Down Rock
Humus
Water
Air

Question 4

Is the downslope movement of rock, regolith, and soil under the direct influence of gravity

Answer 4

Mass Wasting

Question 5

Act as the main immediate agent in mass movement

Answer 5

Gravity

Question 6

Is a common term used by many people to describe sudden event in which large quantities of rock and soil plunge down steep slopes

Answer 6

Landslide

Question 7

This term encompasses all downslope movement whether it be bedrock, regolith, or a mixture of these

Answer 7

Landslide

Question 8

Controlling Factors of Mass Wasting

Answer 8

Slope Angle
Role of Water
Presence of Clay
Weak Material and Structures

Question 9

All forces resisting movement
downslope can be grouped under
the term _____

Answer 9

shear strength

Question 10

When does downslope movement occur

Answer 10

when shear stress > shear strength

Question 11

contain a high proportion of smectite or montmorillonite which expand and settle when wet and shrink when they dry out.

Answer 11

Expansive and hydrocompacting soils

Question 12

clays in some soils rearrange themselves
after dissolution of salts in the pore spaces. Clay minerals line up
with one another and the pore space is reduced.

Answer 12

Sensitive soil

Question 13

water-saturated clays that spontaneously liquefy when disturbed

Answer 13

Quick Clay

Question 14

Examples of Weak Material And Structures

Answer 14

bedding planes,
weak layers,
joints and fractures,
foliation planes

Question 15

Mass Wasting Process

Answer 15

Slope Failures
Sediment Flow

Question 16

type of slide wherein downward rotation of rock or regolith occurs along a curved surface.

Answer 16

Slump