2. LESSON OBJECTIVES:
At the end of the lesson, learners will be able to:
IDENTIFY THE DIFFERENT GEOLOGICAL HAZARDS
ANALYZE THE CAUSES OF GEOLOGICAL HAZARDS
RECOGNIZE SIGNS OF IMPENDING GEOLOGICAL
HAZARDS
4. GEOLOGICAL
HAZARDS
Volcanic eruptions
heavy rainstorms
rapid snowmelt
rising groundwater
undercutting due to erosion or
excavation
human-induced vibrations in the
earth,
overloading due to construction
certain chemical phenomena in
unconsolidated sediments.
5. GEOLOGICAL
HAZARDS
These geologic
processes only become
hazards when humans
get in their way; if
there were no people
affected, we would find
these natural
phenomena interesting,
but not concerning.
23. Sinkholes
may form from excessive
groundwater extraction
and massive excavations
from urban development,
it changes the natural
water drainage soaking
up areas that are once
dry.
27. SIGNS OF IMPENDING
LANDSLIDES OR
SINKHOLES
1. Springs, water seepage,
or water saturated
grounds in areas that
are not typically wet
2. Soil that loosens and
moves away from
foundations
3. New cracks on unusual
bulges on cemented
ground or walls
28. SIGNS OF IMPENDING
LANDSLIDES OR
SINKHOLES
4. Underground or utility
lines that are broken
due to vibrations or
tremors from the
surface of the ground
5. Buildings, poles, walls,
and fences that are
leaning
6. Sudden flow of creek
waters carrying more
silted water
29. SIGNS OF IMPENDING
LANDSLIDES OR
SINKHOLES
7. Sinkholes, there are
signs of an imminent
danger in groundwater
that does not provide
the same amount and
quality as before or has
become cloudy, acidic,
silted or soiled
30. SIGNS OF IMPENDING
LANDSLIDES OR
SINKHOLES
8. Sign posts or poles that
are suddenly leaning,
slumping, sagging,
slanting or bent.
9. Ponds that have
recently formed or
puddles that grow or
have never disappeared
32. 1/4 SHEET OF PAPER. WRITE THE COMPLETE WORD OR
PHRASE
1. IT IS AN ADVERSE GEOLOGIC CONDITION
CAPABLE OF CAUSING DAMAGE OR LOSS OF
PROPERTY OR LIFE.
a.METEOROLOGICAL HAZARDS
b.HYDROLOGICAL HAZARDS
c. BIOLOGICAL HAZARDS
d.GEOLOGICAL HAZARDS
33. 1/4 SHEET OF PAPER. WRITE THE COMPLETE WORD OR
PHRASE
2. WHICH OF THE FOLLOWING IS AN EXAMPLE OF
GEOLOGICAL HAZARDS
a.VOLCANIC ERUPTION
b.SINKHOLES
c. LANDSLIDES
d.ALL OF THE ABOVE
34. 1/4 SHEET OF PAPER. WRITE THE COMPLETE WORD OR
PHRASE
3. IT IS A GEOLOGIC HAZARDS THAT MAY POSE A
THREAT TO LIVES AND PROPERTIES WHEN
EXPOSED TO HEAVY OR PROLONGED RAIN.
a.VOLCANIC ERUPTION
b.EARTHQUAKE
c. LANDSLIDES
d.ALL OF THE ABOVE
35. 1/4 SHEET OF PAPER. WRITE THE COMPLETE WORD OR
PHRASE
4. FURTHER AGGRAVATION BY RAIN CANNOT
RESULT TO A LANDSLIDE.
a.TRUE
b.FALSE
c. BOTH A AND B ARE CORRECT
d.NONE OF THE ABOVE
36. 1/4 SHEET OF PAPER. WRITE THE COMPLETE WORD OR
PHRASE
5. THESE ARE DEPRESSIONS OR HOLES ON THE
GROUND THAT RESULTED FROM THE COLLAPSE
OF THE SURFACE LAYER OF THE SOIL.
a.EARTHQUAKE
b.SINKHOLES
c. LANDSLIDES
d.NONE OF THE ABOVE
37. 1/4 SHEET OF PAPER. WRITE THE COMPLETE WORD OR
PHRASE
6. AN AREA IS PRONE TO SINKHOLES IF THE SOIL
FOUNDATION IS MADE OF HARD MINERALS AND IS
FREQUENTLY SOAKED IN WATER.
a.TRUE
b.FALSE
c. BOTH A AND B ARE CORRECT
d.NONE OF THE ABOVE
38. 1/4 SHEET OF PAPER. WRITE THE COMPLETE WORD OR
PHRASE
7. WHICH OF THE FOLLOWING CHARACTERISTICS
CAN CAUSE HIGH VULNERABILITY TO A LANDSLIDE?
a.STEEP SLOPE
b.DENSE POPULATION
c. DENUDED GROUND
d.ALL OF THE ABOVE
39. 1/4 SHEET OF PAPER. WRITE THE COMPLETE WORD OR
PHRASE
8. BUILDINGS, POLES, WALLS, AND FENCES THAT
ARE LEANING ARE IMPENDING SIGNS OF A
LANDSLIDE.
a.TRUE
b.FALSE
c. BOTH A AND B ARE CORRECT
d.NONE OF THE ABOVE
40. 1/4 SHEET OF PAPER. WRITE THE COMPLETE WORD OR
PHRASE
9-10. PROVIDE AT LEAST 2
WARNING SIGNS OF LANDSLIDE.
