{"id":18100,"date":"2021-02-06T14:47:22","date_gmt":"2021-02-06T09:17:22","guid":{"rendered":"https:\/\/ncertsolutions.guru\/?p=18100"},"modified":"2021-02-06T14:47:22","modified_gmt":"2021-02-06T09:17:22","slug":"ncert-solutions-for-class-11-geography-chapter-7-part-b","status":"publish","type":"post","link":"https:\/\/ncertsolutions.guru\/ncert-solutions-for-class-11-geography-chapter-7-part-b\/","title":{"rendered":"NCERT Solutions for Class 11 Geography Chapter 7 Natural Hazards and Disasters"},"content":{"rendered":"

Detailed, Step-by-Step NCERT Solutions for Class 11 Geography<\/a> Chapter 7 Natural Hazards and Disasters Questions and Answers were solved by Expert Teachers as per NCERT (CBSE) Book guidelines covering each topic in chapter to ensure complete preparation.<\/p>\n

Natural Hazards and Disasters NCERT Solutions for Class 11 Geography Chapter 7<\/h2>\n

Natural Hazards and Disasters Questions and Answers <\/span>Class 11 Geography Chapter 7<\/h3>\n

Question 1.
\nChoose the right answer from the four alternatives given below :
\n(i) Which one of the following states of India experiences floods frequently?
\n(a) Bihar
\n(b) West Bengal
\n(c) Assam
\n(d) Uttar Pradesh
\nAnswer:
\n(c) Assam<\/p>\n

(ii) In which one of the following districts of Uttranchal did Malpa landslide disaster take place?
\n(G) Bageshwar
\n(b) Almora
\n(c) Champawat
\n(d) Pithoragarh
\nAnswer:
\n(d) Pithoragarh<\/p>\n

\"NCERT<\/p>\n

(iii) Which one of the following states receives floods in the winter month?
\n(a) Assam
\n(b) West Bengal
\n(c) Kerala
\n(d) Tamil Nadu
\nAnswer:
\n(d) Tamil Nadu<\/p>\n

(iv) In which of the following rivers is the Majuli River Island situated?
\n(a) Ganga
\n(b) Brahmaputra
\n(c) Godavari
\n(d) Indus
\nAnswer:
\n(b) Brahmaputra<\/p>\n

(v) Under which type of natural hazards do blizzards come?
\n(a) Atmospheric
\n(b) Aquatic
\n(c) Terrestrial
\n(d) Biological
\nAnswer:
\n(a) Atmospheric<\/p>\n

\"NCERT<\/p>\n

Question 2.
\nAnswer the following questions in less than 30 words :
\n(i) When can a hazard become a disaster?
\nAnswer:
\nHazards and disasters are closely related. Hazard is a threat while disaster is an event. Natural hazards that cause great loss of human life and economy are called disasters and catastrophers while disaster is an extraordinary event of limited duration which causes serious disruption of economy of the country.<\/p>\n

(ii) Why are there more earthquakes in the Himalayas and in the north-eastern region of India?
\nAnswer:
\nThe earthquakes in the Himalayan region are tectonic in origin. Because the Indian plate is moving at a speed of one centimetre per year towards the north and north-eastern direction and this movement of plates is being constantly obstructed by the Eurasian plate from the north.<\/p>\n

As a result of this, both the plates locked with each other resulting in accumulation of energy at different points of time. Excessive accumulation of energy results in the development of stress which causes breaking up of rocks and sudden release of energy causes earthquakes along the Himalayan arc and north-east.<\/p>\n

(iii) What are the basic requirements for the formation of a cyclone?
\nAnswer:
\nThe basic requirements for the formation of a cyclone :<\/p>\n

    \n
  1. Temperature of the oceanic surface over 26\u00b0C.<\/li>\n
  2. Appearance of a closed isobar.<\/li>\n
  3. Pressure dropping below lOOOmb.<\/li>\n
  4. Areas of circular movement, first spreading to a radius of 30-50 km, then increasing gradually to 100-200 km. and even to 1000 km.<\/li>\n
  5. Vertically the wind speed first rising to a height of 6 km, then much higher.<\/li>\n<\/ol>\n

    \"NCERT<\/p>\n

    (iv) How are the floods in eastern India different from the ones in western India?
    \nAnswer:
    \nFloods occur due to :<\/p>\n