Disaster Management Class 10 Notes, Formulas, Questions | SSC

This chapter defines disasters and classifies them as geophysical, biological and man-made. It describes their environmental, medical, economic, administrative, social and political effects and the phases of a disaster. It explains the objectives and cycle of disaster management, pre- and post-disaster management, the disaster management authorities from national to village level under the Disaster Management Act, 2005, and the role of the NDRF. It ends with first aid, the first aid kit and mock drills.

Summary

Disasters are dangerous events that cause sudden change and damage in the environment. Floods, wet and dry famine, cyclones, earthquakes and volcanoes are natural disasters, while damage caused by our use of natural resources for development leads to man-made disasters. The United Nations defines a disaster as a sudden event that causes huge loss of life and property; 'sudden' and 'huge' are the key words. Because disasters are sudden they cannot be predicted, and they affect economic, social, cultural, political and administrative life. Disasters differ in cause and duration: catastrophic ones like the Odisha cyclones and the Gujarat and Latur earthquakes cause total chaos but life returns to normal soon, while famine, crop problems, rising sea levels and desertification have long-lasting effects.

Disasters are classified as geophysical, biological and man-made. Geophysical disasters are geological (earthquake, volcano, tsunami, landslide, erosion, alkalization, flooding) or atmospheric (hot and cold waves, snowstorms, cyclones, hailstorms, drought, flood, meteorites). Biological disasters come from plants (forest fire, spread of fungal disease, weeds) or animals (infectious viruses and bacteria causing cholera, malaria, hepatitis and plague, insects, poisonous bites). Man-made disasters include unknown poisonous gases, atomic tests, accidents from unplanned action, and war, fire, bomb blasts, forced migration, terrorism and child labour.

Effects of disaster are environmental (collapse of buildings, drying and contamination of water sources, pollution from decomposing bodies), medical (injuries, mental stress, epidemics, deaths), economic (sudden expenditure, shortage of funds for other sectors, lower productivity), and professional or administrative (stress on workers, collapse of transport, shortage of facilities). A destroyed port, for example, has long-lasting effects on the economy. If local leadership is weak, citizens become confused and take less part in rescue; if local bodies are hit, departments cannot respond and the whole system may collapse.

The nature and scope of a disaster can be studied in six phases: pre-disaster, warning, emergency, rehabilitation, recovery and reconstruction. For common citizens three are important. In the emergency phase, quick search and rescue, first aid, medical help, restoring communication and evacuation save the most lives, and the gravity of the disaster is estimated. In the transitional phase, rehabilitation begins: debris is cleared, water supply and roads restored, and victims helped; giving them a permanent livelihood is true rehabilitation. The reconstruction phase, which begins within the transitional phase, is complicated and long, as buildings, roads, water supply and farming are restored.

Most disasters have occurred in Asia and the Pacific region, often due to human greed for economic progress. Human disasters have increased after World War II because of growing population and needs, economic inequality, racial and religious differences, terrorism and abduction, and the production of harmful chemicals in developing and poor countries though they are banned in developed ones. Atomic energy plants are another threat, as shown by the radiation leakage after the blast at Chernobyl, Ukraine. Hence citizens' direct participation in disaster management is essential, and plans must suit the location, time and nature of the disaster.

Disaster management means preventing disasters, preparing to face them, or improving the ability to face them through scientific observation and analysis of data. Its objectives are to save lives, supply essential commodities, restore normal life, rehabilitate victims, and take protective measures to prevent or reduce future disasters. The disaster management cycle includes preparation, redemption (a plan to minimize damage to society and the country), preparedness, response immediately after the strike, review of impact, restoration and resurgence linking relief to national development.

Pre-disaster management includes identifying disaster-prone areas, using predictive intensity maps and hazard maps, special training, and spreading awareness through training programmes and mass media. Post-disaster management includes helping victims, involving local survivors, quickly setting up help centres suited to the disaster, sorting and delivering relief material with continuous review, and staying prepared. Under the Disaster Management Act, 2005, authorities are headed by the Prime Minister (national), Chief Minister (state), Collector (district), Tahsildar (taluka) and Sarpanch (village committee). The Collector plans, coordinates and reviews rehabilitation, and the district control unit coordinates with the army, air force, navy, telecommunication, paramilitary forces and voluntary organizations. The National Disaster Response Force, set up under the 2005 Act, has 12 divisions with headquarters in Delhi and works in Maharashtra through the State Reserve Police Force.

First aid is the primary help given to a victim before actual medical treatment, to save life, relieve pain, prevent the condition from worsening and try to improve it. Victims may be carried by the cradle method, on the back or in two hands depending on their condition. A first aid kit contains bandages, gauze, cotton, gloves, clean cloth, soap, antiseptic, safety pins, blade, scissors, thermometer, petroleum jelly, torch and similar items. A mock drill creates an apparent disaster to check reaction time and the efficacy of the plan; its objectives are to evaluate response, improve coordination, identify abilities, improve quick response, check planned actions and find possible errors and risks. Helplines: police 100, fire 101, ambulance 102 and disaster control 108.

Mind map

Disaster management authority from national to village level

Important definitions

Key points to remember

• Key words in the UN definition of disaster: sudden and huge.
• Three types of disasters: geophysical, biological and man-made.
• Six phases: pre-disaster, warning, emergency, rehabilitation, recovery, reconstruction.
• For citizens the emergency, transitional and reconstruction phases are most important.
• Most lives are saved by quick action in the emergency phase.
• Most disasters have occurred in Asia and the Pacific region.
• Chernobyl, Ukraine, saw radiation leakage after a blast in an atomic energy plant.
• A huge landslide hit Malin village, Ambegaon taluka, Pune district in 2014.
• Disaster Management Act was passed in 2005.
• Collector heads the district disaster management authority.
• NDRF has 12 divisions with headquarters in Delhi.
• Natural disasters cannot be avoided but losses can be minimized; man-made disasters can be avoided.
• Helplines: police 100, fire 101, ambulance 102, disaster control unit 108.

Solved examples

Example 1. Identify the type of disaster: terrorism, soil erosion, hepatitis, forest fire.

Terrorism: man-made (international). Soil erosion: geophysical (geological). Hepatitis: biological (animal origin, infectious virus). Forest fire: biological (plant), as shown in the textbook chart.

Example 2. Explain the effects of a railway accident using the textbook categories.

Environmental: damage to tracks and surroundings. Medical: injuries, deaths, mental stress of victims. Economic: sudden spending on rescue and repair, loss of productivity. Administrative and professional: stress on workers, disruption of the transport system, shortage of facilities. Social: grief and confusion among families and citizens.

Example 3. Apply the three important phases to a flood.

Emergency phase: rescue people stranded in water, give first aid and medical help, restore communication, move people out of the affected area. Transitional phase: clear debris and mud, restore clean water supply and roads, give relief and help victims start earning again. Reconstruction phase: rebuild houses, roads and water supply and restart farming, which takes a long time.

Example 4. Plan pre-disaster management for your school for a fire.

1. Identify fire-prone spots such as labs and electrical panels. 2. Keep fire extinguishers and a first aid kit ready. 3. Get training from fire fighters. 4. Make students aware of exits and helpline 101. 5. Hold regular mock drills to check reaction time and correct errors. 6. Form a school disaster committee on the pattern of the disaster management authority.

Important questions and answers

Q1. Who is the chairman of the National Disaster Management Authority?

The Prime Minister.

Q2. Who heads the District Disaster Management Authority?

The District Collector.

Q3. When was the Disaster Management Act passed in India?

In 2005.

Q4. What are the objectives of disaster management?

1. Save human lives during the calamity and release trapped people. 2. Supply essential commodities to reduce the effect of the disaster. 3. Restore normal life in the region. 4. Rehabilitate disaster victims. 5. Take protective measures so that such disasters do not recur or their intensity is reduced.

Q5. Explain the role of the district disaster control unit after a disaster.

It is set up immediately after the disaster or its warning. It reviews various aspects of the disaster, keeps continuous contact with the army, air force, navy, telecommunication department and paramilitary forces for help, and coordinates the help of voluntary organizations.

Q6. Give reasons for the increase in human disasters after World War II.

Population and its needs have increased greatly; economic inequality and racial and religious differences cause instability; terrorism, abduction and social differences have become common; and harmful chemicals banned in developed countries are still produced in developing and poor countries.

Q7. Why is it essential to get training in first aid?

Accidents, burns, electric shock, snake or dog bites and other disasters happen around us, and victims need help before a doctor arrives. Trained persons can save lives, relieve pain, stop the condition from worsening and use available material correctly.

Q8. Which methods are used to transport patients? Why?

The cradle method, carrying on the back and carrying in two hands. The method is chosen according to the condition of the victim so that the patient is moved safely without further harm.

Q9. Write a note on mock drill.

A mock drill creates an apparent disaster to check preparedness and reaction time; trained personnel carry out their duties to test the plan. Fire fighters hold drills in schools showing how to put out fire and rescue people. Objectives: evaluate response, improve coordination between departments, identify abilities, improve quick response, check planned actions and find errors and risks.

Q10. Explain why mock drills are useful.

They test how quickly and correctly people and departments respond, reveal mistakes and risks in the plan before a real disaster, improve coordination and give practice, so that losses are reduced when an actual disaster strikes.

Q11. Write a note on the Disaster Management Authority.

Under the Disaster Management Act, 2005, authorities exist at every level: national (Prime Minister), state (Chief Minister), district (Collector), taluka (Tahsildar) and village committee (Sarpanch). They control and coordinate warning, rescue and rehabilitation along with social and private organizations and the public.

Q12. What is the difference between pre-disaster and post-disaster management?

Pre-disaster management is preparation before a disaster: identifying prone areas, hazard and intensity maps, training and public awareness. Post-disaster management is action after a disaster: helping victims, setting up help centres, distributing relief material with continuous review and involving local survivors.

Exam tips

• Draw the authority structure as a flow chart with chairmen at each level.
• Learn examples under each type of disaster from the classification chart.
• For notes, write the definition first and then 4 to 5 points.
• Remember the helpline numbers and the NDRF facts.
• In 'explain with a disaster' questions, organise the answer under emergency, transitional and reconstruction phases.

FAQs

How does the UN define a disaster?

As a sudden event that leads to huge loss of life and property.

What is the most important phase for saving lives?

The emergency phase, because quick rescue and first aid at this time save the maximum lives.

What is the NDRF?

The National Disaster Response Force, set up under the Disaster Management Act, 2005, with 12 divisions and headquarters in Delhi; in Maharashtra it works through the State Reserve Police Force.

Can disasters be avoided?

Natural disasters cannot be avoided but their losses can be minimized; man-made disasters can be avoided.

These notes were prepared with AI help from the Balbharati Science and Technology Part 2 textbook (2026-27) and checked against it.