ASSIGNMENT 15- CHATERS 2, 20 - MASS WASTING, GLOBAL CLIMATE CHANGE DOCUMENT (Com
ID: 118221 • Letter: A
Question
ASSIGNMENT 15- CHATERS 2, 20 - MASS WASTING, GLOBAL CLIMATE CHANGE DOCUMENT (Compatibility Mode) Layout References Mailings Review View Tell me what you want to do Name: Assignment 15-Chapters 12 and 20 - Mass Wasting and Global Climate Change Chapter 12 Date: 1. Define Mass Wasting. Why is this process different from other erosional processes such as streams, glaciers, and wind? 2. How does water affect mass wasting? 3. What factors increase the risks of landslides? 4. What is the difference between earthflows and debris-flows? Chapter 20: 5. What is the difference between weather and climate? 6. Name at least 5 connections between climate and geology. 7. Why are seafloor sediments useful in the study of past climates? 8. Why has the CO2 level in the atmosphere been increasing over the past 200 years? 9. How has the atmosphere responded to the growing CO2 levels? 10. List and describe the factors that are causing sea level to riseExplanation / Answer
1) Mass wasting is also called as slope movement .
It is the downslope movement of the following due to gravity.
Some times the mass movement is caused by water .
Mass wasting is different from other erosional processes such as stream, glaciers and wind because in mass wasting the movement is caused by the own mass of the material due to gravity.
2) When water is added to the mass the cohesive nature of the particles in the mass decreases.
In addition to it , the mass also increases when water is added ,increasing its gravity.
The increased gravity results in mass wasting down the slope.
3) Factors increasing the risk of landslides
4) An earthflow is a mass wasting process caused by thick flow of fine-sized materials which are saturated with water and move down the slope due to gravity.
Debris flows carry all the materials which come in their way like soil and fragmented rocks and form very thick deposits on the floor of the valleys.
Debris flows are faster than earthflows.