7. Landslide Material moves suddenly and rapidly down a slope. Rock fall Loose rocks fall down a steep slope. Mudflow A large amount of mud moves downhill very quickly.
Q. What is the process of a landslide?
A landslide is any geologic process in which gravity causes rock, soil, artificial fill or a combination of the three to move down a slope. When the parallel component becomes greater than the perpendicular component, the object slides down the slope.
Q. Which of the following processes refers to masses of rock and soil that move downhill due to gravity?
Mass movement is an erosional process that moves rocks and sediments downslope due to the force of gravity. Surface creep is the slow downhill movement of soil and rock debris. …
Q. What is the mass movement of rock debris down a mountain slope called?
Mass movement, also called Mass Wasting, bulk movements of soil and rock debris down slopes in response to the pull of gravity, or the rapid or gradual sinking of the Earth’s ground surface in a predominantly vertical direction.
Q. What is the difference between a fall a slide and a flow?
A fall or topple happens when rocks and other sediments fall through the air and land at the bottom of a slope. Flows are a mixture of water, rock and sediment. They move very quickly. A slide happens when a section of soil or rock suddenly gives way and moves down a slope.
Q. What are 4 types of landslides?
Landslides in bedrock
- Rock falls. Single and small rock falls from cliffs build up to form aprons of scree or talus, sometimes developing over long time periods.
- Rock slope failures. This group of landslides varies greatly in features.
- Rotational landslides.
- Debris flows.
- Creep.
- Solifluction.
- Translational slides.
Q. Is topple an example of slide?
Types of landslides: (1) a fall; (2) a topple; (3) a slide; (4) a spread; (5) a flow.
Q. What are the major causes of landslide?
Landslides can be initiated in slopes already on the verge of movement by rainfall, snowmelt, changes in water level, stream erosion, changes in ground water, earthquakes, volcanic activity, disturbance by human activities, or any combination of these factors.
Q. What are the causes and effects of landslides?
Landslides can cause seismic disturbances; landslides can also result from seismic disturbances, and earthquake-induced slides have caused loss of life in many countries. Slides can cause disastrous flooding, particularly when landslide dams across streams are breached, and flooding may trigger slides.
Q. How do landslides impact humans?
HUMANS: The effect landslides have on humans are property damage, injury and even death. Water supplies, fisheries, sewage disposals systems, forest, dams and road ways can be damaged and affected for years.
Q. What are the human activities that causes landslides?
Many human-caused landslides can be avoided or mitigated. They are commonly a result of building roads and structures without adequate grading of slopes, poorly planned alteration of drainage patterns, and disturbing old landslides.
Q. What are the effects of landslides on the environment?
Landslides can overwhelm, and even pollute streams and waterbodies with excess sediment. In extreme cases they can dam streams and rivers, impacting both water quality and fish habitat. Landslides can wipe out large tracts of forest, destroy wildlife habitat, and remove productive soils from slopes.
Q. Are there any positive effects of landslides?
Positive effects of landslides. As with all natural hazards, landslides offer some important service functions. Thus, the positive effects of landslides are: creating new habitats, increasing biodiversity, providing raw materials and can be good tools for studying the environment.
Q. What are three factors that can make landslides more likely?
Landslides are usually caused by several factors, but three of them are preeminently important: Slope saturation with water; Seismic activity in the area; Volcanic activity.
Q. How do human activities cause imbalance in nature?
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
Q. What are the causes of imbalance in nature?
Ecological Imbalance: Factor # 1.
- Degradation of Land and Soil Erosion:
- Deforestation:
- Faulty Utilisation of Water Resources:
- Environmental Problems from Faulty Mining Practices:
- Industrial and Atmospheric Pollution:
Q. What is the meaning of imbalance in nature?
Ecological imbalance is when a natural or human-caused disturbance disrupts the natural balance of an ecosystem. A disturbance is any change that causes a disruption in the balance of an ecosystem. Examples of natural disturbances are. Volcanic eruptions. Floods.
Q. What are the four factors causing ecological imbalance?
FACTORS CAUSING ECOLOGICAL IMBALANCE :
- DEFORESTATION .
- DEGRADATION OF LAND AND SOIL .
- OVER EXPLOSION OF RESOURCES .
- INDUSTRIAL AND ATMOSPHERIC . POLLUTION .
- FAULTY MINING PRACTICE .
Q. How do you restrict imbalance in nature?
Recycle to prevent the exploitation of natural resources. Conserve energy by choosing more energy efficient appliances and automobiles. Plant more trees and stop deforestation. This will help in reducing the pressure on our ecosystem.
Q. How are humans disturbing the balance in nature Class 6?
1) Urbanization and Deforestation – For development of land and road constructions, humans have been destroying the nature. 2) Pollution created by vehicles and industries has caused imbalance in the environment. 3) Wild animals killed by the poachers has somehow led to the imbalance in ecosystem.
Q. How can we maintain balance in nature?
Taking steps to reduce or eliminate pollution from nonpoint sources such as streets and farms will help to maintain the ecological balance. Sewage and run-off of agricultural fertilizer can cause the rapid growth of algae in lakes and streams. The growth of algae blocks sunlight and depletes the oxygen in the water.
