INTRODUCTION
In this topic, we are going to show you how to build or simulate a Landslide working model for your science project or exhibitions.
Landslide facts
The landslide has several forms of mass wasting which is basically ground movement such as deep-seated slope failures, rockfalls, debris flows and finally mudflows.
Landslides occur in various environments like mountain ranges, coastal cliffs, and underwater which is called as submarine landslides.
Landslides are caused due to gravity however there are other conditions too affecting slope stability which produce specific conditions that are responsible for slopes to prone to failure.
They are caused by natural calamities like heavy rainfalls, earthquake, land cut to build road and others. It is not always identifiable how and when a landslide will occur.
What causes a landslide?
There are many causes of a landslide when a slope undergoes some process which results in a change in condition from stable to unstable due to a decrease in shear strength of slope material.
Some natural causes of landslide include snow melting or glacier melting as below
- Saturation by rainwater infiltration
- Increase of pore water pressure
- Rising of groundwater
- Hydrostatic pressure in cracks and fractures
- Loss of soil nutrients and soil structure
- Erosion of the toe of a slope by oceans or rivers
- Physical or chemical weathering,
- Earthquakes due to ground shaking and volcanic eruptions.
Landslides due to Climate Changes
Landslides are also aggravated by human activities such as vibrations from traffic or machinery, cultivation, construction and deforestation, mining, blasting, earthwork, agriculture or forestry activities, urbanization which change the amount of water infiltrating the soil.
How do we prevent landslides?
Reduce the deforestation by planting more trees so that roots help to hold the soil erosion during rains
You can also divert the water also helps to prevent the mudslides.
Keep your city or village drains, gutters by cleaning regularly
How are mudslides measured?
Nowadays scientist use extensometer, inclinometer or GPS (global positioning system to measure the mudslides or landslides
Step by Step Landslide Simulation Video
In this video, we will show you the steps by step simulation of the landslide working model by using the items available at home
Materials Used to make Landslide simulation model
- White, Color Chart Paper
- Plastic box
- Waste papers
- Mud
- Water
- Plastic houses
- Plastic trees
- Butter paper
- Ribbon
- Card Board
- Scale
- Pencil
- Paint brush
- Hot Glue Gun
- Fevicol
- Waste Boxes to get cardboard
- Scissor to Cut
Science Exhibition Questions & Answers on Landslide working model
- What is a landslide?
Seismic disturbances cause landslides and earthquake. - What are the causes of landslide?
Weathering and erosion caused by water running such as rivers, streams, wind, ice, currents, and waves wipe out lateral slope which results in a landslide. - Which of the following can trigger a landslide?
Earthquake and heavy rainfall can trigger a landslide. - Why is landslide dangerous?
Landslide effects human life, hundreds of properties and landscape are at risk. - What are the different types of landslides?
Types of landslides are debris flow, Earthflow, Debris slide, Rock avalanche, Shallow landslide, Deep-seated landslide. - How can landslides be predicted?
- There are various optical sensor available to validating it to preventing it
- Identifying any new cracks or bulge in the ground
Conclusions
Using the Landslide working or simulation model, students(it is also called as mass waste movement activities) easily understand how the landslide happens, what is the reason for it, how to prevent occurring it