Available Answers

1. 1.

   Fill in the blanks.

   1. Cyclones occur in the warm oceans in the ___________ and ___________ regions of the world.
   2. Electrical short circuits can cause a _____________.
   3. Flood waters deposit fertile ____________ over the areas they submerge.
   4. A ______________ occurs due to Earth's natural processes.
   5. When cyclones occur, winds with great speeds move towards intense low-pressure areas known as the _______________.
2. 2.

   Match the following.

   Disasters	Causes
   1. Accident	a. Dangerous chemicals
   2. Biological	b. Drunk driving, brake failure, equipment failure
   3. Earthquake	c. Due to atmospheric disturbances that occur around low-pressure areas
   4. Chemical	d. Due to medical wastes or microorganisms
   5. Cyclone	e. Due to the release of energy from the Earth's crust

    

3. 3.

   State whether true or false.

   1. Radiations released due to nuclear disasters can cause skin cancer.
   2. You can use the seismometer to measure the pressure created during a cyclone.
   3. The Barak River causes floods in Bihar.
   4. Due to prolonged periods of droughts, the land surface may begin to crack.
   5. Storms are known as hurricanes in the Indian Ocean.
4. 4.

   Name the following.

   1. On April 25, 2015, a devastating earthquake occurred in this country.
   2. The United States bombed these cities in Japan on August 6, 1945.
   3. On November 26,2008, terrorists attacked this city of India.
   4. It is one of the world's worst chemical disasters that occurred on December 2, 1984, in India.
   5. On Septembe 11, 2001, terroriss attacked this building in New York City.
5. 5.

   How do cyclones occur? Give geographical reason.

6. 6.

   List the causes of floods.