Question

(b) Read the passage carefully and answer the following questions:

Tsunami or the Harbour wave struck havoc in the Indian Ocean on the

26th of December 2004. The wave was the result of an earthquake that

had its epicentre near the western boundary of Sumatra. The magnitude

of the earthquake was 9.0 on the Richter scale. Indian plate went under

the Burma plate, there was a sudden movement of the sea floor, causing

the earthquake. The ocean floor was displaced by about 10 – 20m and

tilted in a downward direction. A huge mass of ocean water flowed to fill in

the gap that was being created by the displacement. This marked the

withdrawal of the water mass from the coastlines of the landmasses in the

south and Southeast Asia. After thrusting of the Indian plate below the

Burma plate, the water mass rushed back towards the coastline as a

tsunami. Tsunami travelled at a speed of about 800 km. per hour,

comparable to speed of commercial aircraft and completely washed away

some of the islands in the Indian ocean. The Indira point in the Andaman

and Nicobar Islands that marked the southernmost point of India got

completely submerged. As the wave moved from earthquake epicentre

from Sumatra towards the Andaman Islands and Sri Lanka,

the wavelength decreased with decreasing depth of water. The travel

speed also declined from 700-900 km per hour to less than 70 km per

hour. Tsunami waves travelled up to a depth of 3 km from the coast killing

more than 10,000 people and affected more than lakh of houses. In India,

the worst affected were the coastal areas of Andhra Pradesh, Tamil Nadu,

Kerala, Pondicherry and the Andaman and Nicobar Islands.

(i) What was the cause of Tsunami which was occurred in 26th Dec.2004

in Indian Ocean? 2

(ii) Which Southernmost point was completely submerged?

(iii) Tsunami travelled at a speed of about _______.

(iv) Name the place where the early warning system which predict in

advance?

(v) Where was its epicenter?​

Answer 1

Answer:

i)The Wave was the results of earthquake.

2)Asia

3)800km

4)