This detailed presentation is for you who want a broader understanding of natural hazards. If you have to present a similar topic, you can easily use this presentation, as it also contains illustrative and scientific models, which make the content of the presentation more student-friendly. Feel free to comment on the content and possibly write some good ideas on how the content can be improved. Have a nice day:)

1. Natural
Hazards - the
endless cycle!!!

2. Presentation
Outline Define natural hazards
Identifying different types
of natural hazards
Understand different
earthquake models

3. What naturally-occurring event
creates the amount of damage
shown in the photo?
Introduction
In this presentation, you'll learn
about the different types of
natural hazards, global warming,
and whether the human era is
closed to be dissolved.

4. Learning
Outcomes
Enumerate the types
of natural hazards.
Describe each type of
natural hazards.
Infer why some areas
are more vulnerable
to natural hazards
than others.
increase our attention
and awareness of nature
and our consumption.

5. Natural Hazard
It is a threat of a naturally-
occuring event that has a possible
negative effect on humans.
Natural Disaster
It occurs when a natural hazard
occurs and significantly harm and
damage the community.
What is a
natural hazard?

6. It is a rapid, rotating and organized system
of clouds and thunderstorms.
Tropical
Cyclone
It can bring strong winds, torrential rains,
high waves, and destructive storm surges.
A cyclone's high winds can erode the soil,
thereby damaging existing vegetation and
ecosystems. This erosion leaves the area
exposed and prone to even more wind
erosion. Soil and sand that is blown into
other areas can damage the vegetation
there. Erosion also can be caused by storm
surges from tropical cyclones.

7. An earthquake is a sudden release of
energy along a fault in the Earth's crust.
Earthquake
It poses a severe threat because of its
irregular intervals and difficulty to forecast.
A powerful earthquake can destroy
buildings, factories, shops, roads, bridges
and schools. These cause many people to
become homeless.
The Richter scale measures the magnitude
of earthquakes, and the Mercalli scale
measures their intensity.

8. The Richter scale was developed in 1935 by
Charles F. Richter of the California Institute
of Technology.
The Richter scale is logarithmic, meaning
that whole-number jumps indicate a tenfold
increase. In this case, the increase is in
wave amplitude. That is, the wave
amplitude in a level 6 earthquake is 10
times greater than in a level 5 earthquake,
and the amplitude increases 100 times
between a level 7 earthquake and a level
9 earthquake. The amount of energy
released increases 31.7 times between
whole number values.
Richter scale

9. The Mercalli intensity scale is a scale to
measure the intensity of earthquakes.
Unlike the Richter scale, the Mercalli scale
does not take into account the energy of
an earthquake directly.
It measures the damage from earthquakes
and the observed effects. Lower numbers
indicate intensity likely felt by people and
higher numbers indicate damage to
structures and buildings.
Mercalli scale

10. Volcanic eruptions occur when molten
material from the Earth's interior is
extruded to the surface.
Volcanic
Eruption
Avalanches of hot materials, release of
toxic gas, and lava flows make volcanic
eruptions dangerous.
The deadliest volcanic eruption happend in
in 1815. Mount Tambora erupted on
Sumbawa, an island of modern-day
Indonesia. Historians regard it as the
volcano eruption with the deadliest known
direct impact: roughly 100,000 people
died in the immediate aftermath

11. Did You
Know?
Earthquakes and volcanoes commonly
occur in the boundaries of tectonic
plates.
The Pacific Ring of Fire, for example, is
a horseshoe-shaped belt in the Pacific
Ocean where active volcanoes and
frequent earthquakes occur.

12. Floods and flashfloods are common
products of torrential rains especially if it
occurs after a long period of dry
conditions.
Flood/
Flashflood
Dam breaks can also result to flooding, and
can severely affect the communities
nearby.

13. Massive forest or wildland fires are
uncontrolled fires that burn forests,
grasslands, or bushlands. They pose a
threat not only to the forest wealth but also
to the entire regime to fauna and flora
seriously disturbing the bio-diversity and
the ecology and environment of a region.
The Himalayan forests, particularly,
Garhwal Himalayas have been burning
regularly during the last few summers, with
colossal loss of vegetation cover in that
region. It commonly occurs during and after
long periods of drought. It can result from
either lightning or human activities.
Forest or
Wildland Fire

14. Some areas can be more
affected by a hazard or
disaster than other areas due
to the following factors:
Vulnerability
to Hazards
and Disasters
Proximity to a
hazardous event
High population
density in an area
Lack of public education
and awareness
Lack or non-existent
early warning systems

15. Some types of natural hazards
are tropical cyclones,
earthquakes, volcanic eruptions,
floods/flashfloods, and
forest/wildland fire.
Natural Hazard
It is a threat of a naturally-
occuring event that has a possible
negative effect on humans.
Review

16. 1
2
3
Does your area
experience any natural
hazards?
What are the damages
incurred when a natural
hazard hits the area?
Can you find some
examples of your
lifestyle, that contribute
to natural hazards?
!Quiz time!

17. National Geographic. "Natural Disasters."
https://www.nationalgeographic.com/enviro
nment/topic/natural-disasters-weather &
https://vikaspedia.in/energy/environment/kn
ow-your-environment/forest-fires.
Reference

18. Lets act
now and
safe our
PLANET🌍