Natural disasters 1
Published on: Mar 3, 2016
Transcripts - Natural disasters 1
NAME: TANISHA CHANDRA
TEACHER: Mrs. ANUPMA
An earthquake in San Francisco
An earthquake in Japan
An earthquake in China An earthquake in New Zealand
1. Earthquakes kills approximately 8,000 people
each year and have caused an estimated 13
million deaths in the past 4,000 years.
2. The moment magnitude scale (MMS) replaced
the 1930s-era Richter scale in the 1970s as the
method of measuring the size of earthquakes in
terms of energy released.
3. In Japan mythology, a giant catfish called
Namazu is responsible for earthquakes.
4. The Indian Ocean earthquake in 2004 generated
enough energy to power all the homes and
businesses in the United States for three days.
MORE FACTS MORE FACTS
1. An average earthquake lasts
around a minute.
2. Aftershocks occur because the
displaced fault line and crust are
adjusting to the effects of the
main earthquake. Larger
earthquakes can have aftershocks
that last for years.
3. Shock waves produced by Ray
leigh waves or waves that roll
through the Earth’s surface—in
contrast to side-to-side waves or
Love waves—can travel far
enough upward to cause a
disturbance in the ionosphere.
The ionosphere is the layer of
Earth’s atmosphere about 50-300
miles (80-480 km) above Earth’s
In Japan mythology ,Catfish Namazu
is responsible for earthquakes.
TECHNOLOGY WHICH CAN HELP US
IN FIGHTING WITH EARTHQUAKES
START THE COUNTDOWN
1. If you're not ready to live in a soccer ball-
shaped house that's resistant to
earthquakes and floats on water, you may
have some other options on your hands.
1. Shock absorbers aren't just for cars. If you
were going on Coney Island's Parachute Jump
back in the day, you would have been glad to see
the shock absorbers resting at the bottom, ready
to soften your landing.
How can we be prepared for
Before an earthquake occurs
Fasten shelves securely to walls, and place
heavy objects on lower shelves.
Store breakable items in low, closed cabinets.
Hang items such as pictures and mirrors away
from beds and anywhere people sit.
Brace hanging light fixtures.
Repair known defective electrical wiring and
Repair any large existing cracks in walls or
Store poisons such as pesticides and
herbicides, as well as flammable liquids, on
bottoms shelves of latched cabinets.
Strap your water heater to studs in the wall
and bolt it to the floor.
Identify safe places in each room (under
sturdy furniture, against inside walls, away
Locate safe places outdoors (away from
buildings, trees, electrical lines, and bridges).
Teach family members how to turn off
gas, electricity, and water.
Teach children how to dial 911 in an
Have disaster supplies on hand (flashlight and
extra batteries, battery operated radio, fist aid
kit with manual, emergency food and drinking
water, non electric can opener, cash, sturdy
Develop an emergency communications plan in
case family members are separated.
During an earthquake (indoors)...
Take cover beneath a sturdy piece of furniture
or against an indoor wall away from glass that
Stay inside! The most dangerous thing you can
do during an earthquake is to try to leave.
During an earthquake (outdoors)...
Move into the open, away from buildings, street
lights, and overhead utility wires. Stay there
until the shaking stops.
During an earthquake (in a moving
Try to find a clear area away from
buildings, trees, overpasses, and
Stop quickly and stay in the vehicle.
Once the shaking has stopped, proceed
with caution. Bridges and ramps may have
been damaged during the shaking.
Dealing with pets...
The behavior of pets may change after an
earthquake, and they may become
aggressive or defensive.
Leash dogs or keep them in a fenced
Pets may not be allowed in emergency
shelters, so prepare an emergency supply
that includes a several day supply of dry
pet food and a large water container
After the earthquake...
Be prepared for aftershocks. They may cause
additional damage for hours to months after the
Help injured or trapped persons within the limits
of your abilities.
Listen to a battery operated radio or television
for emergency information.
Check on the elderly and disabled, or children
who may need special help.
Stay out of damaged buildings!
Use the telephone only for emergency calls.
Clean up spilled materials.
Open cabinet and closet doors cautiously.
Inspect chimneys for damage, and be
extremely careful when lighting fires in
fireplaces. Chimney damage may lead to fires.
Check utilities for damage. If you smell gas,
turn off the gas and do not use electrical
devices (including telephones). Stay away from
broken electrical wires, and turn off the main
fuse box or circuit breaker. If water pipes are
damaged, do not use the toilet and avoid tap
water for drinking. Use your emergency supply,
and melt ice cubes for additional water.