Arka IAS Academy

Todays topic - Earthquake

The shaking of earth caused due to the release of energy which generate waves that travel.

Reason
The release of energy occurs along a fault
Fault is a sharp break in the crustal rock. Tend to move apart overcomes the friction, and block gets deformed and slide past each other abruptly. This cause release of energy

Focus or hypocenter
Point of release of energy beneath the crust(interior)

Epicenter
Nearest point of the focus on the surface of the earth

Two types of waves
1. Body waves
Released from the focus
Moves in all directions throughout the body of earth
Travel to surface of earth

2. Surface waves
Formed due to the interaction of body waves with surface rocks
Moves along the surface
Velocity differs with density of material they pass through
Refraction and reflection occurs
Most dangerous because of high amplitude
Vibrate perpendicular to the direction of the propagation in the vertical plane and creates troughs and crests

Body waves are of two types

1. P- wave (primary waves)
Starting from focus P waves moves faster and reach surface first
Similar to sound waves
Travel through gas, liquid and solid medium
Vibrate parallel to the direction of wave
Exerts pressure on the material in the direction of propagation

2. S -waves
Reaches surface with some time lag hence called secondary waves
Travel only through solid material
Used by scientists to study the structure of the interior of the earth
Refraction and reflection occurs
Vibrate perpendicular to the direction of the propagation

Happy Independence day. Let's remember the contributions of all the leaders and participants of freedom struggle. The blood that shed for cause of nations, the swet that precipitated for unification, the brains that stormed for the making basic structure for governing the nation and strong hand that worked for uplifting the quality of life of people from poverty and scarcity to prosperity and plenty shall buzz in our heads in adequate frequency so that it get resonate to the young minds.

On this 75th year India is celebrating as 'Azadi Ka Amrit Mahotsav'.

Let us use Flags made of cloth not plastic. As a Sensible society, let's express our emotion towards nation in right way.

Jai hind💪

Discussion 1

As everybody is aware of three levels of exams that includes preliminary(objective), mains(descriptive) and Interview. One has to go through thorough preparation for all the papers and subject for the exams. Lets check for the preliminary Examination.

Preliminary Exam has two papers
1. General studies
2. CSAT - Civil services Aptituide Test

Both being objective and OMR test. CSAT paper is just a qualifying paper that is will not be a matter in determining the Rank. But unless one qualify the paper will not be able to get into next level. Hence should give thy importance for the paper too.
Today we can do discuss about General studies paper.

General studies Paper will have 100 questions. Right answers will be awarded marks and negative marks for wrong answers. Hence it is wise to double check the answers we mark.

Now lets check the Syllabus for UPSC CSE Prelims General Studies Paper I:
1. Current events of national and international importance
2. History of India and Indian National Movement
3. Indian and World Geography
4. Indian Polity and Governance
5. Economic and Social Development
6. General issues on Environmental ecology, Bio-diversity and Climate Change ( Covers only general awareness of the issues, no subject specialization required)
7. General Science
8. Art & Culture

Hope everybody will like and share this page.

Thank You

Lets start our preparations

NATO

Full form : North Atlantic Treaty Organisation

A Political and Military alliance

There are currently 30 members
Albania, Belgium, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Estonia, France, Germany, Greece, Hungry, Iceland, Italy, Latvia, Lithuania, Luxemberg, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Turkey, The United Kingdom, The United States

If you are a civil service aspirant, like to know more about the exam and it's preparation. do contact immediately.