Writing Paragraph
Earthquake
Earthquake is shaking of the Earth’s surface caused by rapid movement of the Earth’s rocky outer layer. Earthquakes occur when energy stored within the Earth, usually in the form of strain in rocks, suddenly releases. This energy is transmitted to the surface of the Earth by earthquake waves. Scientists who study earthquakes are called seismologists. Most earthquakes are caused by the sudden slip along geologic faults. The faults slip because of movement of the Earth’s tectonic plates. This concept is called the elastic rebound theory. The rocky tectonic plates move very slowly, floating on top of a weaker rocky layer. As the plates collide with each other or slide past each other, pressure builds up within the rocky crust. Earthquakes occur when pressure within the crust increases
আরো পড়ুন : How to learn English বিষয়ক Writing Paragraph, ১৪তম পর্ব, এইচএসসির ইংরেজি ২য় পত্র
slowly over hundreds of years and finally exceeds the strength of the rocks. Earthquakes also occur when human activities, such as the filling of reservoirs, increase stress in the Earth’s crust. In the last 500 years, several million people have been killed by earthquakes around the world, including over 240,000 in the 1976 Tang-Shan, China, earthquake. Worldwide, earthquakes have also caused severe property and structural damage. Adequate precautions, such as education, emergency planning and constructing stronger, more flexible, safely designed structures, can limit the loss of life and decrease the damage caused by earthquakes. Bangladesh is also is in the risk of a major earthquake because it lies in the active earthquake zone. The recurrent occurrence of the earthquake in Bangladesh has made us concerned. All the buildings should follow earthquake building code as mandatory to reduce the loss.
লেখক : সহযোগী অধ্যাপক, ইংরেজি বিভাগ
আদমজী ক্যান্টনমেন্ট কলেজ, ঢাকা
কবীর
