KV EVS Class 5 Lesson When the Earth Shook PPT (LATEST)

1. When the Earth Shooks!!!!!
Prepared By :
Rajneesh Kr Singh
KV Talbehat

2. Natural Disasters
• A natural disaster is a major event caused by natural processes of the
Earth; examples include floods, volcanic eruptions, earthquakes, tsunamis.
-NC-ND

4. When the Earth Shook!!!!!!!!
Earthquakes happen when two
large pieces of the Earth's crust
suddenly slip. This causes shock
waves to shake the surface of the
earth in the form of an
Earthquake.
• TOP 10 Strongest Earthquakes
Cought On Camera.
• https://www.youtube.com/watch?v
=UTTCaQN-Nh8&t=137s

5. Earth 'Crust
The Earth’s crust is
the outermost layer
of our planet and is
less than 1% of the
entire Earth’s size.

6. Earth’s outer layer is made up of large, moving
pieces called plates. All of Earth’s land and water
sit on these plates.These plates are known as
Tectonic plates . The plates are constantly
moving over this weaker layer.

8. Gujrat Earthquake 26 January 2001

11. Richter scale
To tell the strength of an
earthquake scientists use a
scale called Richter scale.
The larger the number on
the Richter scale, the larger
the earthquake.
Charles Richter developed
the Richter Scale in 1935.

13. Intensity of Richter Scale
• 4.0 - Could shake your house as if a large truck were passing close by. Some people
may not notice.
• 6.0 - Stuff will fall off of shelves. Walls in some houses may crack and windows
break. Pretty much everyone near the center will feel this one.
• 7.0 - Weaker buildings will collapse and cracks will occur in bridges and on the
street.
• 8.0 - Many buildings and bridges fall down. Large cracks in the earth.
• 9.0 and up - Whole cities flattened and large-scale damage.

14. What to do during an Earthquake !!!
• Drop, Cover, and Hold On.
• Find an open spot
• If in a vehicle, stop.

15. Seismic zones of India
Activity :
• Make a list of Indian States
which have Highest risk of
Major Earthquake.

16. Impor tance of Neighbourhood

17. Think and Reply!!!!!!!!!

18. Some
Interesting
Facts of
Earthquake
• The longest recorded earthquake
lasted for 10 minutes(Dec. 2004
Sumatra,Sri lanka)
• An average earthquake lasts around a
minute
• There are at least 500,000 earthquakes
per year.
• An earthquake under the ocean can
cause tsunamis.
• There are at least one earthquake per
year with a magnitude of 8,0 or higher
on average.