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Types of Earthquakes and Shadow Zones (in Hindi)
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This lesson is about the types of Earthquakes and emergence of shadow zones.

Bhairavi Tidke
2nd year B. Tech. Student, Design head of Bombay technologist of ICT, dancer, painter, interested in research and like to help people...

U
Unacademy user
about my query
Ravi, where is your query ?
Ravi Patil
a year ago
mam why you can not replie my question
Ravi, I have searched your questions but can't find
Please ask your question here
Ravi Patil
a year ago
mam I am beginner I have lot of time but I want this time invest or use in proper use for sub wise so mam my English vocab is so poor mam i known mam some one tell me this type you prepare you vocab some tell this type you can preper good vocabulary but mam for mam satisfaction tell me how many vocab word remember mam I decide remember 10,0000 eng word
Ravi Patil
a year ago
mam tell me how many word I remember
Ravi, 7000+ good words are enough for any competitive exam.
Make a daily routine to learn 10 new words in this way you can have a good collection of vocab, for that you can watch my vocab courses because in these courses I have covered all the important words of vocab. Daily in the morning you can learn these words.
Ravi Patil
a year ago
mam for any exam or specific
Ravi Patil
a year ago
mam the Hindu vocabulary is enough for SCC or banking exam
  1. Shadow Zone & Types of EQ


  2. Propagation of EQ waves AsEQ waves moves causes vibrations in the body P-wave vibrate parallel to the direction of wave This leads to stretching & squeezing actions Other waves vibrate perpendicular to the wave direction This creates troughs and crests Other wavesvibrate perpendicular to the wave direction .


  3. P wave compressions dilations wave direction S wave wavelength


  4. Emergence of shadowzone Shadow zones- areas where waves are not reported For S-wave-entire zone beyond 105 degrees from epicenter . Covers 40% of the earth surface .For P-wave->zone between 105 to 145 degrees from the epicenter


  5. Liquid outer core Bolid inner core P-wave shadown zone P-wavo shadow zonc Mantle P-wavos S-waves


  6. S and P waves felt shadow zone: S and P waves felt very weak P waves S wave P wave outer core inner core only P waves felt mantle H crust Timing and strength of SCISmic waves gives us a picture of the interior. S waves absorbed shadow zone P waves refracted at core boundary


  7. Types of Earthquake An earthquake, simply defined as the shaking of the earth's surface. On the basis of depth of focus, earthquakes are classified into three types. Following are the three types of earthquakes Types Shallow Earthquake Intermediate Earthquake Deep Earthquake Depth of focus (km) 60 60-300 >300


  8. Types of Earthquakes 1. Tectonic EQ-> most common -h> due to sliding of rocks along a fault plane 2. Volcanic EQ-> confined to areas of active volcanoes 3. Collapse EQ->in the areas of intense mining activity 4. Explosion EQ->due to explosion of chemical or nuclear devices 5. Reservoir Induced EQ->in the areas of large reservoir